STIs

On July 22, the Centers for Disease Control and Prevention released updated sexually transmitted infection treatment guidelines to reflect current screening, testing, and treatment recommendations. The guidelines were last updated in 2015.

The new recommendations come at a pivotal moment in the field’s history, Kimberly Workowski, MD, a medical officer at the CDC’s Division of STD Prevention, told this news organization in an email. “The COVID-19 pandemic has caused decreased clinic capacity and drug and diagnostic test kit shortages,” she says. Many of these shortages have been resolved, she added, and it is important that health care professionals use the most current evidence-based recommendations for screening and management of STIs.

Updates to these guidelines were necessary to reflect “continued advances in research in the prevention of STIs, new interventions in terms of STI prevention, and thirdly, changing epidemiology,” Jeffrey Klausner, MD, MPH, an STI specialist with the Keck School of Medicine at the University of Southern California, Los Angeles, said in an interview. “There’s been increased concern about antimicrobial resistance, and that’s really driven some of the key changes in these new STI treatment guidelines.”

Notable updates to the guidelines include the following:

• Updated treatment recommendations for gonorrhea, chlamydia, , and 
• Two-step testing for diagnosing genital  virus
• Expanded risk factors for  testing in pregnant women
• Information on FDA-cleared rectal and oral tests to diagnose chlamydia and gonorrhea
• A recommendation that universal  screening be conducted at least once in a lifetime for adults aged 18 years and older

Dr. Workowski emphasized updates to gonorrhea treatment that built on the recommendation published in December 2020 in Morbidity and Mortality Weekly Report. The CDC now recommends that gonorrhea be treated with a single 500-mg injection of ceftriaxone, and if chlamydial infection is not ruled out, treating with a regimen of 100 mg of oral doxycycline taken twice daily for 7 days. Other gonorrhea treatment recommendations include retesting patients 3 months after treatment and that a test of cure be conducted for people with pharyngeal gonorrhea 1 to 2 weeks after treatment, using either culture or nucleic-acid amplification tests.

“Effectively treating gonorrhea remains a public health priority,” Dr. Workowski said. “Gonorrhea can rapidly develop antibiotic resistance and is the second most commonly reported bacterial STI in the U.S., increasing 56% from 2015 to 2019.”

The updates to syphilis screening for pregnant women are also important, added Dr. Klausner. “We’ve seen a dramatic and shameful rise in congenital syphilis,” he said. In addition to screening all pregnant women at the first prenatal visit, the CDC recommends retesting for syphilis at 28 weeks’ gestation and at delivery if the mother lives in an area where the prevalence of syphilis is high or if she is at risk of acquiring syphilis during pregnancy. An expectant mother is at higher risk if she has multiple sex partners, has an STI during pregnancy, has a partner with an STI, has a new sex partner, or misuses drugs, the recommendations state.

Dr. Klausner also noted that the updates provide more robust guidelines for treating transgender individuals and incarcerated people.

The treatment guidelines are available online along with a wall chart and a pocket guide that summarizes these updates. The mobile app with the 2015 guidelines will be retired at the end of July 2021, Dr. Workowski said. An app with these updated treatment recommendations is in development and will be available later this year.

A version of this article first appeared on Medscape.com.

On July 22, the Centers for Disease Control and Prevention released updated sexually transmitted infection treatment guidelines to reflect current screening, testing, and treatment recommendations. The guidelines were last updated in 2015.

The new recommendations come at a pivotal moment in the field’s history, Kimberly Workowski, MD, a medical officer at the CDC’s Division of STD Prevention, told this news organization in an email. “The COVID-19 pandemic has caused decreased clinic capacity and drug and diagnostic test kit shortages,” she says. Many of these shortages have been resolved, she added, and it is important that health care professionals use the most current evidence-based recommendations for screening and management of STIs.

Updates to these guidelines were necessary to reflect “continued advances in research in the prevention of STIs, new interventions in terms of STI prevention, and thirdly, changing epidemiology,” Jeffrey Klausner, MD, MPH, an STI specialist with the Keck School of Medicine at the University of Southern California, Los Angeles, said in an interview. “There’s been increased concern about antimicrobial resistance, and that’s really driven some of the key changes in these new STI treatment guidelines.”

Notable updates to the guidelines include the following:

• Updated treatment recommendations for gonorrhea, chlamydia, , and 
• Two-step testing for diagnosing genital  virus
• Expanded risk factors for  testing in pregnant women
• Information on FDA-cleared rectal and oral tests to diagnose chlamydia and gonorrhea
• A recommendation that universal  screening be conducted at least once in a lifetime for adults aged 18 years and older

Dr. Workowski emphasized updates to gonorrhea treatment that built on the recommendation published in December 2020 in Morbidity and Mortality Weekly Report. The CDC now recommends that gonorrhea be treated with a single 500-mg injection of ceftriaxone, and if chlamydial infection is not ruled out, treating with a regimen of 100 mg of oral doxycycline taken twice daily for 7 days. Other gonorrhea treatment recommendations include retesting patients 3 months after treatment and that a test of cure be conducted for people with pharyngeal gonorrhea 1 to 2 weeks after treatment, using either culture or nucleic-acid amplification tests.

“Effectively treating gonorrhea remains a public health priority,” Dr. Workowski said. “Gonorrhea can rapidly develop antibiotic resistance and is the second most commonly reported bacterial STI in the U.S., increasing 56% from 2015 to 2019.”

The updates to syphilis screening for pregnant women are also important, added Dr. Klausner. “We’ve seen a dramatic and shameful rise in congenital syphilis,” he said. In addition to screening all pregnant women at the first prenatal visit, the CDC recommends retesting for syphilis at 28 weeks’ gestation and at delivery if the mother lives in an area where the prevalence of syphilis is high or if she is at risk of acquiring syphilis during pregnancy. An expectant mother is at higher risk if she has multiple sex partners, has an STI during pregnancy, has a partner with an STI, has a new sex partner, or misuses drugs, the recommendations state.

Dr. Klausner also noted that the updates provide more robust guidelines for treating transgender individuals and incarcerated people.

The treatment guidelines are available online along with a wall chart and a pocket guide that summarizes these updates. The mobile app with the 2015 guidelines will be retired at the end of July 2021, Dr. Workowski said. An app with these updated treatment recommendations is in development and will be available later this year.

A version of this article first appeared on Medscape.com.

On July 22, the Centers for Disease Control and Prevention released updated sexually transmitted infection treatment guidelines to reflect current screening, testing, and treatment recommendations. The guidelines were last updated in 2015.

The new recommendations come at a pivotal moment in the field’s history, Kimberly Workowski, MD, a medical officer at the CDC’s Division of STD Prevention, told this news organization in an email. “The COVID-19 pandemic has caused decreased clinic capacity and drug and diagnostic test kit shortages,” she says. Many of these shortages have been resolved, she added, and it is important that health care professionals use the most current evidence-based recommendations for screening and management of STIs.

Updates to these guidelines were necessary to reflect “continued advances in research in the prevention of STIs, new interventions in terms of STI prevention, and thirdly, changing epidemiology,” Jeffrey Klausner, MD, MPH, an STI specialist with the Keck School of Medicine at the University of Southern California, Los Angeles, said in an interview. “There’s been increased concern about antimicrobial resistance, and that’s really driven some of the key changes in these new STI treatment guidelines.”

Notable updates to the guidelines include the following:

• Updated treatment recommendations for gonorrhea, chlamydia, , and 
• Two-step testing for diagnosing genital  virus
• Expanded risk factors for  testing in pregnant women
• Information on FDA-cleared rectal and oral tests to diagnose chlamydia and gonorrhea
• A recommendation that universal  screening be conducted at least once in a lifetime for adults aged 18 years and older

Dr. Workowski emphasized updates to gonorrhea treatment that built on the recommendation published in December 2020 in Morbidity and Mortality Weekly Report. The CDC now recommends that gonorrhea be treated with a single 500-mg injection of ceftriaxone, and if chlamydial infection is not ruled out, treating with a regimen of 100 mg of oral doxycycline taken twice daily for 7 days. Other gonorrhea treatment recommendations include retesting patients 3 months after treatment and that a test of cure be conducted for people with pharyngeal gonorrhea 1 to 2 weeks after treatment, using either culture or nucleic-acid amplification tests.

“Effectively treating gonorrhea remains a public health priority,” Dr. Workowski said. “Gonorrhea can rapidly develop antibiotic resistance and is the second most commonly reported bacterial STI in the U.S., increasing 56% from 2015 to 2019.”

The updates to syphilis screening for pregnant women are also important, added Dr. Klausner. “We’ve seen a dramatic and shameful rise in congenital syphilis,” he said. In addition to screening all pregnant women at the first prenatal visit, the CDC recommends retesting for syphilis at 28 weeks’ gestation and at delivery if the mother lives in an area where the prevalence of syphilis is high or if she is at risk of acquiring syphilis during pregnancy. An expectant mother is at higher risk if she has multiple sex partners, has an STI during pregnancy, has a partner with an STI, has a new sex partner, or misuses drugs, the recommendations state.

Dr. Klausner also noted that the updates provide more robust guidelines for treating transgender individuals and incarcerated people.

The treatment guidelines are available online along with a wall chart and a pocket guide that summarizes these updates. The mobile app with the 2015 guidelines will be retired at the end of July 2021, Dr. Workowski said. An app with these updated treatment recommendations is in development and will be available later this year.

A version of this article first appeared on Medscape.com.

The Food and Drug Administration has expanded the approval of secnidazole to include treatment of trichomoniasis in adults, according to a statement from manufacturer Lupin Pharmaceuticals.

Trichomoniasis vaginalis is a common, nonviral, curable sexually transmitted disease that affects approximately 3 million to 5 million adults in the United States each year; the infection can linger for months or years if left untreated, and may have a negative impact on reproductive health. The drug was approved for the treatment of bacterial vaginosis in 2017.

The availability of a single-dose oral treatment for both trichomoniasis and bacterial vaginosis may help improve adherence and reduce risk factors associated with these conditions, including pelvic inflammatory disease and other sexually transmitted infections, according to the statement.

The approval for the new indication was based primarily on data from a phase 3 clinical trial in which women with a confirmed trichomoniasis diagnosis were randomized to a single dose of 2 g oral secnidazole or a placebo. Secnidazole showed a 92.2% cure rate for patients with trichomoniasis, compared with placebo, based on cultures collected 6-12 days after dosing. Cure rates in subsets of patients with HIV and bacterial vaginosis were 100% and 95%, respectively.

The most common treatment-related adverse events were vulvovaginal candidiasis and nausea, each reported in 2.7% of study participants. The study findings were published in March 2021 in Clinical Infections Diseases.

Secnidazole also is approved for treatment of trichomoniasis in men, based on data from four open-label studies, one with men only and three including both men and women, according to the statement.

Full prescribing information for secnidazole is available here.

The Food and Drug Administration has expanded the approval of secnidazole to include treatment of trichomoniasis in adults, according to a statement from manufacturer Lupin Pharmaceuticals.

Trichomoniasis vaginalis is a common, nonviral, curable sexually transmitted disease that affects approximately 3 million to 5 million adults in the United States each year; the infection can linger for months or years if left untreated, and may have a negative impact on reproductive health. The drug was approved for the treatment of bacterial vaginosis in 2017.

The availability of a single-dose oral treatment for both trichomoniasis and bacterial vaginosis may help improve adherence and reduce risk factors associated with these conditions, including pelvic inflammatory disease and other sexually transmitted infections, according to the statement.

The approval for the new indication was based primarily on data from a phase 3 clinical trial in which women with a confirmed trichomoniasis diagnosis were randomized to a single dose of 2 g oral secnidazole or a placebo. Secnidazole showed a 92.2% cure rate for patients with trichomoniasis, compared with placebo, based on cultures collected 6-12 days after dosing. Cure rates in subsets of patients with HIV and bacterial vaginosis were 100% and 95%, respectively.

The most common treatment-related adverse events were vulvovaginal candidiasis and nausea, each reported in 2.7% of study participants. The study findings were published in March 2021 in Clinical Infections Diseases.

Secnidazole also is approved for treatment of trichomoniasis in men, based on data from four open-label studies, one with men only and three including both men and women, according to the statement.

Full prescribing information for secnidazole is available here.

The Food and Drug Administration has expanded the approval of secnidazole to include treatment of trichomoniasis in adults, according to a statement from manufacturer Lupin Pharmaceuticals.

Trichomoniasis vaginalis is a common, nonviral, curable sexually transmitted disease that affects approximately 3 million to 5 million adults in the United States each year; the infection can linger for months or years if left untreated, and may have a negative impact on reproductive health. The drug was approved for the treatment of bacterial vaginosis in 2017.

The availability of a single-dose oral treatment for both trichomoniasis and bacterial vaginosis may help improve adherence and reduce risk factors associated with these conditions, including pelvic inflammatory disease and other sexually transmitted infections, according to the statement.

The approval for the new indication was based primarily on data from a phase 3 clinical trial in which women with a confirmed trichomoniasis diagnosis were randomized to a single dose of 2 g oral secnidazole or a placebo. Secnidazole showed a 92.2% cure rate for patients with trichomoniasis, compared with placebo, based on cultures collected 6-12 days after dosing. Cure rates in subsets of patients with HIV and bacterial vaginosis were 100% and 95%, respectively.

The most common treatment-related adverse events were vulvovaginal candidiasis and nausea, each reported in 2.7% of study participants. The study findings were published in March 2021 in Clinical Infections Diseases.

Secnidazole also is approved for treatment of trichomoniasis in men, based on data from four open-label studies, one with men only and three including both men and women, according to the statement.

Full prescribing information for secnidazole is available here.

A 1-week course of doxycycline is more effective than single-dose azithromycin to treat rectal chlamydia in men who have sex with men (MSM), according to newly published results in the New England Journal of Medicine.

Chlamydia is the most commonly reported bacterial STI in the United States, with 4 million cases reported in 2018, and 127 million globally. Most infections are asymptomatic.

Rates of rectal chlamydia among MSM screened for infection range from 3% to 10.5%.

The most recent Centers for Disease Control and Prevention chlamydia guidelines recommend either a single dose of azithromycin (1 g) or doxycycline 100 mg twice daily for 7 days. These 2015 guidelines were based on a meta-analysis of urogenital chlamydia infections, which showed comparable efficacy of 97% or 98%, respectively.

Study coauthor Jane S. Hocking, PhD, head of the sexual health unit at the University of Melbourne, told this news organization that “observational studies had suggested that azithromycin was about 20% less effective than doxycycline,” prompting this clinical trial.

The study, conducted at five sexual health clinics in Australia, was a double-blind, randomized, controlled trial of doxycycline (100 mg twice daily for 7 days) or azithromycin (1-g single dose).

Because 85% of infected men are asymptomatic, the study’s primary outcome was a negative nucleic acid amplification test at 4 weeks, confirming a microbiologic cure.

Using a modified intention-to-treat population, the study showed a microbiologic cure in 281 of 290 men (96.9%) in the doxycycline group and 227 of 297 (76.4%) in the azithromycin group (P < .001).

Adverse events were more common in the azithromycin group. Nausea, diarrhea, and vomiting occurred in 134 (45.1%) men in that group versus 98 men (33.8%) in those receiving doxycycline (P = .006).

A similar study was reported in Clinical Infectious Diseases in February 2021 by Dombrowski and colleagues. It was also randomized, double blinded, and placebo controlled but was smaller and conducted in Seattle and Boston. A 20% difference was found, with 80/88 (91%) in the doxycycline group and 63/89 (71%) in the azithromycin group having a microbiologic cure at 4 weeks of follow-up.

Jeanne Marrazzo, MD, director of the division of infectious diseases at the University of Alabama at Birmingham, said in an interview that the researchers focused solely on asymptomatic proctitis because “other symptoms might indicate need for broader presumptive antibiotics” for coinfections. Similarly, symptomatic proctitis “could indicate LGV [lymphogranuloma venereum] chlamydia, which ... automatically mandates that 3-weeks of doxycycline be used.” Dr. Marrazzo concluded: “The fact that this was a blinded study obviously strengthens the conclusions/findings, which is great. It’s very reassuring that results overall are so consistent with the CID paper.” Dr. Marrazzo was not involved in either the New England Journal of Medicine investigation or CID study.

Ina Park, MD, associate professor in the department of family and community medicine at the University of California, San Francisco, and author of “Strange Bedfellows: Adventures in the Science, History, and Surprising Secrets of STDs,” (New York: Flatiron Books, 2021) was not involved in either study but has a long history of working with adolescents in clinics for STDs. Based on that experience, she told this news organization that, while doxycycline now clearly appears to be the drug of choice, “if compliance is an issue and rectal chlamydia is not likely, then I think azithromycin is still something we need to consider, particularly for younger patients, and folks for whom compliance is going to be an issue.” She added: “with adolescent patients, there are issues of parents possibly discovering the antibiotic and asking lots of questions. So, it’s very nice for folks to be able to get therapy, sort of a one and done approach in the clinic.”

The 2020 CDC Guidelines for Gonococcal Infections says: “CDC recommends a single 500 mg intramuscular dose of ceftriaxone for uncomplicated gonorrhea. Treatment for coinfection with Chlamydia trachomatis with oral doxycycline (100 mg twice daily for 7 days) should be administered when chlamydial infection has not been excluded.”

Hocking concluded – and Dr. Marrazzo and Dr. Park concur – that this study “provides conclusive evidence that doxycycline should be the first-line treatment for rectal chlamydia, but probably for just any chlamydia infection,” with specific exceptions.

The University of Melbourne researchers also noted that the doxycycline course requires more compliant patients, as adherence isn’t assured. The issue of compliance and need for directly observed therapy, allergy to doxycycline, and pregnancy (where doxycycline is contraindicated) will remain the primary indications for continued use of azithromycin.

A version of this article first appeared on Medscape.com.

A 1-week course of doxycycline is more effective than single-dose azithromycin to treat rectal chlamydia in men who have sex with men (MSM), according to newly published results in the New England Journal of Medicine.

Chlamydia is the most commonly reported bacterial STI in the United States, with 4 million cases reported in 2018, and 127 million globally. Most infections are asymptomatic.

Rates of rectal chlamydia among MSM screened for infection range from 3% to 10.5%.

The most recent Centers for Disease Control and Prevention chlamydia guidelines recommend either a single dose of azithromycin (1 g) or doxycycline 100 mg twice daily for 7 days. These 2015 guidelines were based on a meta-analysis of urogenital chlamydia infections, which showed comparable efficacy of 97% or 98%, respectively.

Study coauthor Jane S. Hocking, PhD, head of the sexual health unit at the University of Melbourne, told this news organization that “observational studies had suggested that azithromycin was about 20% less effective than doxycycline,” prompting this clinical trial.

The study, conducted at five sexual health clinics in Australia, was a double-blind, randomized, controlled trial of doxycycline (100 mg twice daily for 7 days) or azithromycin (1-g single dose).

Because 85% of infected men are asymptomatic, the study’s primary outcome was a negative nucleic acid amplification test at 4 weeks, confirming a microbiologic cure.

Using a modified intention-to-treat population, the study showed a microbiologic cure in 281 of 290 men (96.9%) in the doxycycline group and 227 of 297 (76.4%) in the azithromycin group (P < .001).

Adverse events were more common in the azithromycin group. Nausea, diarrhea, and vomiting occurred in 134 (45.1%) men in that group versus 98 men (33.8%) in those receiving doxycycline (P = .006).

A similar study was reported in Clinical Infectious Diseases in February 2021 by Dombrowski and colleagues. It was also randomized, double blinded, and placebo controlled but was smaller and conducted in Seattle and Boston. A 20% difference was found, with 80/88 (91%) in the doxycycline group and 63/89 (71%) in the azithromycin group having a microbiologic cure at 4 weeks of follow-up.

Jeanne Marrazzo, MD, director of the division of infectious diseases at the University of Alabama at Birmingham, said in an interview that the researchers focused solely on asymptomatic proctitis because “other symptoms might indicate need for broader presumptive antibiotics” for coinfections. Similarly, symptomatic proctitis “could indicate LGV [lymphogranuloma venereum] chlamydia, which ... automatically mandates that 3-weeks of doxycycline be used.” Dr. Marrazzo concluded: “The fact that this was a blinded study obviously strengthens the conclusions/findings, which is great. It’s very reassuring that results overall are so consistent with the CID paper.” Dr. Marrazzo was not involved in either the New England Journal of Medicine investigation or CID study.

Ina Park, MD, associate professor in the department of family and community medicine at the University of California, San Francisco, and author of “Strange Bedfellows: Adventures in the Science, History, and Surprising Secrets of STDs,” (New York: Flatiron Books, 2021) was not involved in either study but has a long history of working with adolescents in clinics for STDs. Based on that experience, she told this news organization that, while doxycycline now clearly appears to be the drug of choice, “if compliance is an issue and rectal chlamydia is not likely, then I think azithromycin is still something we need to consider, particularly for younger patients, and folks for whom compliance is going to be an issue.” She added: “with adolescent patients, there are issues of parents possibly discovering the antibiotic and asking lots of questions. So, it’s very nice for folks to be able to get therapy, sort of a one and done approach in the clinic.”

The 2020 CDC Guidelines for Gonococcal Infections says: “CDC recommends a single 500 mg intramuscular dose of ceftriaxone for uncomplicated gonorrhea. Treatment for coinfection with Chlamydia trachomatis with oral doxycycline (100 mg twice daily for 7 days) should be administered when chlamydial infection has not been excluded.”

Hocking concluded – and Dr. Marrazzo and Dr. Park concur – that this study “provides conclusive evidence that doxycycline should be the first-line treatment for rectal chlamydia, but probably for just any chlamydia infection,” with specific exceptions.

The University of Melbourne researchers also noted that the doxycycline course requires more compliant patients, as adherence isn’t assured. The issue of compliance and need for directly observed therapy, allergy to doxycycline, and pregnancy (where doxycycline is contraindicated) will remain the primary indications for continued use of azithromycin.

A version of this article first appeared on Medscape.com.

A 1-week course of doxycycline is more effective than single-dose azithromycin to treat rectal chlamydia in men who have sex with men (MSM), according to newly published results in the New England Journal of Medicine.

Chlamydia is the most commonly reported bacterial STI in the United States, with 4 million cases reported in 2018, and 127 million globally. Most infections are asymptomatic.

Rates of rectal chlamydia among MSM screened for infection range from 3% to 10.5%.

The most recent Centers for Disease Control and Prevention chlamydia guidelines recommend either a single dose of azithromycin (1 g) or doxycycline 100 mg twice daily for 7 days. These 2015 guidelines were based on a meta-analysis of urogenital chlamydia infections, which showed comparable efficacy of 97% or 98%, respectively.

Study coauthor Jane S. Hocking, PhD, head of the sexual health unit at the University of Melbourne, told this news organization that “observational studies had suggested that azithromycin was about 20% less effective than doxycycline,” prompting this clinical trial.

The study, conducted at five sexual health clinics in Australia, was a double-blind, randomized, controlled trial of doxycycline (100 mg twice daily for 7 days) or azithromycin (1-g single dose).

Because 85% of infected men are asymptomatic, the study’s primary outcome was a negative nucleic acid amplification test at 4 weeks, confirming a microbiologic cure.

Using a modified intention-to-treat population, the study showed a microbiologic cure in 281 of 290 men (96.9%) in the doxycycline group and 227 of 297 (76.4%) in the azithromycin group (P < .001).

Adverse events were more common in the azithromycin group. Nausea, diarrhea, and vomiting occurred in 134 (45.1%) men in that group versus 98 men (33.8%) in those receiving doxycycline (P = .006).

A similar study was reported in Clinical Infectious Diseases in February 2021 by Dombrowski and colleagues. It was also randomized, double blinded, and placebo controlled but was smaller and conducted in Seattle and Boston. A 20% difference was found, with 80/88 (91%) in the doxycycline group and 63/89 (71%) in the azithromycin group having a microbiologic cure at 4 weeks of follow-up.

Jeanne Marrazzo, MD, director of the division of infectious diseases at the University of Alabama at Birmingham, said in an interview that the researchers focused solely on asymptomatic proctitis because “other symptoms might indicate need for broader presumptive antibiotics” for coinfections. Similarly, symptomatic proctitis “could indicate LGV [lymphogranuloma venereum] chlamydia, which ... automatically mandates that 3-weeks of doxycycline be used.” Dr. Marrazzo concluded: “The fact that this was a blinded study obviously strengthens the conclusions/findings, which is great. It’s very reassuring that results overall are so consistent with the CID paper.” Dr. Marrazzo was not involved in either the New England Journal of Medicine investigation or CID study.

Ina Park, MD, associate professor in the department of family and community medicine at the University of California, San Francisco, and author of “Strange Bedfellows: Adventures in the Science, History, and Surprising Secrets of STDs,” (New York: Flatiron Books, 2021) was not involved in either study but has a long history of working with adolescents in clinics for STDs. Based on that experience, she told this news organization that, while doxycycline now clearly appears to be the drug of choice, “if compliance is an issue and rectal chlamydia is not likely, then I think azithromycin is still something we need to consider, particularly for younger patients, and folks for whom compliance is going to be an issue.” She added: “with adolescent patients, there are issues of parents possibly discovering the antibiotic and asking lots of questions. So, it’s very nice for folks to be able to get therapy, sort of a one and done approach in the clinic.”

The 2020 CDC Guidelines for Gonococcal Infections says: “CDC recommends a single 500 mg intramuscular dose of ceftriaxone for uncomplicated gonorrhea. Treatment for coinfection with Chlamydia trachomatis with oral doxycycline (100 mg twice daily for 7 days) should be administered when chlamydial infection has not been excluded.”

Hocking concluded – and Dr. Marrazzo and Dr. Park concur – that this study “provides conclusive evidence that doxycycline should be the first-line treatment for rectal chlamydia, but probably for just any chlamydia infection,” with specific exceptions.

The University of Melbourne researchers also noted that the doxycycline course requires more compliant patients, as adherence isn’t assured. The issue of compliance and need for directly observed therapy, allergy to doxycycline, and pregnancy (where doxycycline is contraindicated) will remain the primary indications for continued use of azithromycin.

A version of this article first appeared on Medscape.com.

Primary care for LGBTQ+ patients should focus on early identification and management of unique health risks, according to a leading expert.

Patients who are transgender, for instance, are nine times more likely to commit suicide than the general population (2015 U.S. Transgender Survey (USTS). Inter-university Consortium for Political and Social Research. 2019 May 22. doi: 10.3886/ICPSR37229.v1), and those who are also Black have an estimated HIV prevalence of 62%, demonstrating the cumulative, negative health effects of intersectionality (www.cdc.gov/hiv/group/gender/transgender/hiv-prevalence.html).

“Experiences with marginalization and stigma directly relate to some of the poor physical and mental health outcomes that these patients experience,” Megan McNamara, MD, said during a presentation at the American College of Physicians annual Internal Medicine meeting.

Dr. McNamara, who is director of the Gender Identity Veteran’s Experience (GIVE) Clinic, Veterans Affairs Northeast Ohio Healthcare System, Cleveland, offered a brief guide to managing LGBTQ+ patients. She emphasized increased rates of psychological distress and substance abuse, and encouraged familiarity with specific risks associated with three subgroups: men who have sex with men (MSM), women who have sex with women (WSW), and those who are transgender.

Men who have sex with men

According to Dr. McNamara, preexposure prophylaxis (PrEP) should be offered based on Centers for Disease Control and Prevention eligibility criteria, which require that the patient is HIV negative, has had a male sex partner in the past 6 months, is not in a monogamous relationship, and has had anal sex or a bacterial sexually transmitted infection in the past 6 months. The two PrEP options, emtricitabine/tenofovir disoproxil fumarate and emtricitabine/tenofovir alafenamide, are equally effective and have similar safety profiles, Dr. McNamara said, but patients with impaired renal function should receive the alafenamide formulation.

Dr. McNamara also advised screening gay men for extragenital STIs, noting a 13.3% increased risk. When asked about anal Pap testing for HPV, Dr. McNamara called the subject “very controversial,” and ultimately recommended against it, citing a lack of data linking anal HPV infection and dysplasia with later development of rectal carcinoma, as well as the nonactionable impact of a positive result.

“For me, the issue is ... if [a positive anal Pap test] is not going to change my management, if I don’t know that the anal HPV that I diagnose will result in cancer, should I continue to monitor it?” Dr. McNamara said.

Women who have sex with women

Beyond higher rates of psychological distress and substance abuse among lesbian and bisexual women, Dr. McNamara described increased risks of overweight and obesity, higher rates of smoking, and lower rates of Pap testing, all of which should prompt clinicians to advise accordingly, with cervical cancer screening in alignment with guidelines. Clinicians should also discuss HPV vaccination with patients, taking care to weigh benefits and risks, as “catch-up” HPV vaccination is not unilaterally recommended for adults older than 26 years.

Transgender patients

Discussing transgender patients, Dr. McNamara focused on cross-sex hormone therapy (CSHT), first noting the significant psychological benefits, including improvements in depression, somatization, interpersonal sensitivity, hostility, anxiety, phobic anxiety/agoraphobia, and quality of life.

According to Dr. McNamara, CSHT is relatively simple and may be safely administered by primary care providers. For transmasculine patients, testosterone supplementation is all that is needed, whereas transfeminine patients will require spironolactone or GnRH agonists to reduce testosterone and estradiol to increase feminizing hormones to pubertal levels.

CSHT is not without risks, Dr. McNamara said, including “very high” risks of erythrocytosis among transmasculine patients and venous thromboembolic disease among transfeminine patients; but these risks need to be considered in the context of an approximate 40% suicide rate among transgender individuals.

“I can tell you in my own practice that these [suicide] data ring true,” Dr. McNamara said. “Many, many of my patients have attempted suicide, so [CSHT] is something that you really want to think about right away.”

Even when additional risk factors are present, such as preexisting cardiovascular disease, Dr. McNamara suggested that “there are very few absolute contraindications to CSHT,” and described it as a “life-sustaining treatment” that should be viewed analogously with any other long-term management strategy, such as therapy for diabetes or hypertension.

Fostering a transgender-friendly practice

In an interview, Nicole Nisly, MD, codirector of the LGBTQ+ Clinic at the University of Iowa Hospitals and Clinics, Iowa City, reflected upon Dr. McNamara’s presentation, noting that primary care providers – with a little education – are the best candidates to care for transgender patients.

“I think [primary care providers] do a better job [caring for transgender patients] than endocrinologists, honestly, because they can provide care for the whole person,” Dr. Nisly said. “They can do a Pap, they can do STI screening, they can assess mood, they can [evaluate] safety, and the whole person, as opposed to endocrinologists, who do hormone therapy, but somebody else does everything else.”

Dr. Nisly emphasized the importance of personalizing care for transgender individuals, which depends upon a welcoming practice environment, with careful attention to language.

Foremost, Dr. Nisly recommended asking patients for their preferred name, sexual orientation, and gender identity.

“One of the most difficult things [for transgender patients] is to see notes with the wrong name – the name that makes them feel uncomfortable – or the wrong pronoun,” Dr. Nisly said. “That’s very important to the community.”

Dr. Nisly also recommended an alternative term for cross-sex hormone therapy.

“I hate cross-sex hormone therapy terminology, honestly,” Dr. Nisly said. “I just think it’s so unwelcoming, and I think most of our patients don’t like the terminology, so we use ‘gender-affirming hormone therapy.’”

Dr. Nisly explained that the term “cross-sex” assumes a conventional definition of sex, which is inherently flawed.

When discussing certain medical risk factors, such as pregnancy or HIV, it is helpful to know “sex assigned at birth” for both patients and their sexual partners, Dr. Nisly said. It’s best to ask in this way, instead of using terms like “boyfriend” or “girlfriend,” as “sex assigned at birth” is “terminology the community recognizes, affirms, and feels comfortable with.”

Concerning management of medical risk factors, Dr. Nisly offered some additional perspectives.

For one, she recommended giving PrEP to any patient who has a desire to be on PrEP, noting that this desire can indicate a change in future sexual practices, which the CDC criteria do not anticipate. She also advised in-hospital self-swabbing for extragenital STIs, as this can increase patient comfort and adherence. And, in contrast with Dr. McNamara, Dr. Nisly recommended anal Pap screening for any man that has sex with men and anyone with HIV of any gender. She noted that rates of anal dysplasia are “pretty high” among men who have sex with men, and that detection may reduce cancer risk.

For clinicians who would like to learn more about caring for transgender patients, Dr. Nisly recommended that they start by reading the World Professional Association for Transgender Health guidelines.

“It’s about 300 pages,” Dr. Nisly said, “but it is great.”

Dr. McNamara and Dr. Nisly reported no conflicts of interest.

Primary care for LGBTQ+ patients should focus on early identification and management of unique health risks, according to a leading expert.

Patients who are transgender, for instance, are nine times more likely to commit suicide than the general population (2015 U.S. Transgender Survey (USTS). Inter-university Consortium for Political and Social Research. 2019 May 22. doi: 10.3886/ICPSR37229.v1), and those who are also Black have an estimated HIV prevalence of 62%, demonstrating the cumulative, negative health effects of intersectionality (www.cdc.gov/hiv/group/gender/transgender/hiv-prevalence.html).

“Experiences with marginalization and stigma directly relate to some of the poor physical and mental health outcomes that these patients experience,” Megan McNamara, MD, said during a presentation at the American College of Physicians annual Internal Medicine meeting.

Dr. McNamara, who is director of the Gender Identity Veteran’s Experience (GIVE) Clinic, Veterans Affairs Northeast Ohio Healthcare System, Cleveland, offered a brief guide to managing LGBTQ+ patients. She emphasized increased rates of psychological distress and substance abuse, and encouraged familiarity with specific risks associated with three subgroups: men who have sex with men (MSM), women who have sex with women (WSW), and those who are transgender.

Men who have sex with men

According to Dr. McNamara, preexposure prophylaxis (PrEP) should be offered based on Centers for Disease Control and Prevention eligibility criteria, which require that the patient is HIV negative, has had a male sex partner in the past 6 months, is not in a monogamous relationship, and has had anal sex or a bacterial sexually transmitted infection in the past 6 months. The two PrEP options, emtricitabine/tenofovir disoproxil fumarate and emtricitabine/tenofovir alafenamide, are equally effective and have similar safety profiles, Dr. McNamara said, but patients with impaired renal function should receive the alafenamide formulation.

Dr. McNamara also advised screening gay men for extragenital STIs, noting a 13.3% increased risk. When asked about anal Pap testing for HPV, Dr. McNamara called the subject “very controversial,” and ultimately recommended against it, citing a lack of data linking anal HPV infection and dysplasia with later development of rectal carcinoma, as well as the nonactionable impact of a positive result.

“For me, the issue is ... if [a positive anal Pap test] is not going to change my management, if I don’t know that the anal HPV that I diagnose will result in cancer, should I continue to monitor it?” Dr. McNamara said.

Women who have sex with women

Beyond higher rates of psychological distress and substance abuse among lesbian and bisexual women, Dr. McNamara described increased risks of overweight and obesity, higher rates of smoking, and lower rates of Pap testing, all of which should prompt clinicians to advise accordingly, with cervical cancer screening in alignment with guidelines. Clinicians should also discuss HPV vaccination with patients, taking care to weigh benefits and risks, as “catch-up” HPV vaccination is not unilaterally recommended for adults older than 26 years.

Transgender patients

Discussing transgender patients, Dr. McNamara focused on cross-sex hormone therapy (CSHT), first noting the significant psychological benefits, including improvements in depression, somatization, interpersonal sensitivity, hostility, anxiety, phobic anxiety/agoraphobia, and quality of life.

According to Dr. McNamara, CSHT is relatively simple and may be safely administered by primary care providers. For transmasculine patients, testosterone supplementation is all that is needed, whereas transfeminine patients will require spironolactone or GnRH agonists to reduce testosterone and estradiol to increase feminizing hormones to pubertal levels.

CSHT is not without risks, Dr. McNamara said, including “very high” risks of erythrocytosis among transmasculine patients and venous thromboembolic disease among transfeminine patients; but these risks need to be considered in the context of an approximate 40% suicide rate among transgender individuals.

“I can tell you in my own practice that these [suicide] data ring true,” Dr. McNamara said. “Many, many of my patients have attempted suicide, so [CSHT] is something that you really want to think about right away.”

Even when additional risk factors are present, such as preexisting cardiovascular disease, Dr. McNamara suggested that “there are very few absolute contraindications to CSHT,” and described it as a “life-sustaining treatment” that should be viewed analogously with any other long-term management strategy, such as therapy for diabetes or hypertension.

Fostering a transgender-friendly practice

In an interview, Nicole Nisly, MD, codirector of the LGBTQ+ Clinic at the University of Iowa Hospitals and Clinics, Iowa City, reflected upon Dr. McNamara’s presentation, noting that primary care providers – with a little education – are the best candidates to care for transgender patients.

“I think [primary care providers] do a better job [caring for transgender patients] than endocrinologists, honestly, because they can provide care for the whole person,” Dr. Nisly said. “They can do a Pap, they can do STI screening, they can assess mood, they can [evaluate] safety, and the whole person, as opposed to endocrinologists, who do hormone therapy, but somebody else does everything else.”

Dr. Nisly emphasized the importance of personalizing care for transgender individuals, which depends upon a welcoming practice environment, with careful attention to language.

Foremost, Dr. Nisly recommended asking patients for their preferred name, sexual orientation, and gender identity.

“One of the most difficult things [for transgender patients] is to see notes with the wrong name – the name that makes them feel uncomfortable – or the wrong pronoun,” Dr. Nisly said. “That’s very important to the community.”

Dr. Nisly also recommended an alternative term for cross-sex hormone therapy.

“I hate cross-sex hormone therapy terminology, honestly,” Dr. Nisly said. “I just think it’s so unwelcoming, and I think most of our patients don’t like the terminology, so we use ‘gender-affirming hormone therapy.’”

Dr. Nisly explained that the term “cross-sex” assumes a conventional definition of sex, which is inherently flawed.

When discussing certain medical risk factors, such as pregnancy or HIV, it is helpful to know “sex assigned at birth” for both patients and their sexual partners, Dr. Nisly said. It’s best to ask in this way, instead of using terms like “boyfriend” or “girlfriend,” as “sex assigned at birth” is “terminology the community recognizes, affirms, and feels comfortable with.”

Concerning management of medical risk factors, Dr. Nisly offered some additional perspectives.

For one, she recommended giving PrEP to any patient who has a desire to be on PrEP, noting that this desire can indicate a change in future sexual practices, which the CDC criteria do not anticipate. She also advised in-hospital self-swabbing for extragenital STIs, as this can increase patient comfort and adherence. And, in contrast with Dr. McNamara, Dr. Nisly recommended anal Pap screening for any man that has sex with men and anyone with HIV of any gender. She noted that rates of anal dysplasia are “pretty high” among men who have sex with men, and that detection may reduce cancer risk.

For clinicians who would like to learn more about caring for transgender patients, Dr. Nisly recommended that they start by reading the World Professional Association for Transgender Health guidelines.

“It’s about 300 pages,” Dr. Nisly said, “but it is great.”

Dr. McNamara and Dr. Nisly reported no conflicts of interest.

Primary care for LGBTQ+ patients should focus on early identification and management of unique health risks, according to a leading expert.

Patients who are transgender, for instance, are nine times more likely to commit suicide than the general population (2015 U.S. Transgender Survey (USTS). Inter-university Consortium for Political and Social Research. 2019 May 22. doi: 10.3886/ICPSR37229.v1), and those who are also Black have an estimated HIV prevalence of 62%, demonstrating the cumulative, negative health effects of intersectionality (www.cdc.gov/hiv/group/gender/transgender/hiv-prevalence.html).

“Experiences with marginalization and stigma directly relate to some of the poor physical and mental health outcomes that these patients experience,” Megan McNamara, MD, said during a presentation at the American College of Physicians annual Internal Medicine meeting.

Dr. McNamara, who is director of the Gender Identity Veteran’s Experience (GIVE) Clinic, Veterans Affairs Northeast Ohio Healthcare System, Cleveland, offered a brief guide to managing LGBTQ+ patients. She emphasized increased rates of psychological distress and substance abuse, and encouraged familiarity with specific risks associated with three subgroups: men who have sex with men (MSM), women who have sex with women (WSW), and those who are transgender.

Men who have sex with men

According to Dr. McNamara, preexposure prophylaxis (PrEP) should be offered based on Centers for Disease Control and Prevention eligibility criteria, which require that the patient is HIV negative, has had a male sex partner in the past 6 months, is not in a monogamous relationship, and has had anal sex or a bacterial sexually transmitted infection in the past 6 months. The two PrEP options, emtricitabine/tenofovir disoproxil fumarate and emtricitabine/tenofovir alafenamide, are equally effective and have similar safety profiles, Dr. McNamara said, but patients with impaired renal function should receive the alafenamide formulation.

Dr. McNamara also advised screening gay men for extragenital STIs, noting a 13.3% increased risk. When asked about anal Pap testing for HPV, Dr. McNamara called the subject “very controversial,” and ultimately recommended against it, citing a lack of data linking anal HPV infection and dysplasia with later development of rectal carcinoma, as well as the nonactionable impact of a positive result.

“For me, the issue is ... if [a positive anal Pap test] is not going to change my management, if I don’t know that the anal HPV that I diagnose will result in cancer, should I continue to monitor it?” Dr. McNamara said.

Women who have sex with women

Beyond higher rates of psychological distress and substance abuse among lesbian and bisexual women, Dr. McNamara described increased risks of overweight and obesity, higher rates of smoking, and lower rates of Pap testing, all of which should prompt clinicians to advise accordingly, with cervical cancer screening in alignment with guidelines. Clinicians should also discuss HPV vaccination with patients, taking care to weigh benefits and risks, as “catch-up” HPV vaccination is not unilaterally recommended for adults older than 26 years.

Transgender patients

Discussing transgender patients, Dr. McNamara focused on cross-sex hormone therapy (CSHT), first noting the significant psychological benefits, including improvements in depression, somatization, interpersonal sensitivity, hostility, anxiety, phobic anxiety/agoraphobia, and quality of life.

According to Dr. McNamara, CSHT is relatively simple and may be safely administered by primary care providers. For transmasculine patients, testosterone supplementation is all that is needed, whereas transfeminine patients will require spironolactone or GnRH agonists to reduce testosterone and estradiol to increase feminizing hormones to pubertal levels.

CSHT is not without risks, Dr. McNamara said, including “very high” risks of erythrocytosis among transmasculine patients and venous thromboembolic disease among transfeminine patients; but these risks need to be considered in the context of an approximate 40% suicide rate among transgender individuals.

“I can tell you in my own practice that these [suicide] data ring true,” Dr. McNamara said. “Many, many of my patients have attempted suicide, so [CSHT] is something that you really want to think about right away.”

Even when additional risk factors are present, such as preexisting cardiovascular disease, Dr. McNamara suggested that “there are very few absolute contraindications to CSHT,” and described it as a “life-sustaining treatment” that should be viewed analogously with any other long-term management strategy, such as therapy for diabetes or hypertension.

Fostering a transgender-friendly practice

In an interview, Nicole Nisly, MD, codirector of the LGBTQ+ Clinic at the University of Iowa Hospitals and Clinics, Iowa City, reflected upon Dr. McNamara’s presentation, noting that primary care providers – with a little education – are the best candidates to care for transgender patients.

“I think [primary care providers] do a better job [caring for transgender patients] than endocrinologists, honestly, because they can provide care for the whole person,” Dr. Nisly said. “They can do a Pap, they can do STI screening, they can assess mood, they can [evaluate] safety, and the whole person, as opposed to endocrinologists, who do hormone therapy, but somebody else does everything else.”

Dr. Nisly emphasized the importance of personalizing care for transgender individuals, which depends upon a welcoming practice environment, with careful attention to language.

Foremost, Dr. Nisly recommended asking patients for their preferred name, sexual orientation, and gender identity.

“One of the most difficult things [for transgender patients] is to see notes with the wrong name – the name that makes them feel uncomfortable – or the wrong pronoun,” Dr. Nisly said. “That’s very important to the community.”

Dr. Nisly also recommended an alternative term for cross-sex hormone therapy.

“I hate cross-sex hormone therapy terminology, honestly,” Dr. Nisly said. “I just think it’s so unwelcoming, and I think most of our patients don’t like the terminology, so we use ‘gender-affirming hormone therapy.’”

Dr. Nisly explained that the term “cross-sex” assumes a conventional definition of sex, which is inherently flawed.

When discussing certain medical risk factors, such as pregnancy or HIV, it is helpful to know “sex assigned at birth” for both patients and their sexual partners, Dr. Nisly said. It’s best to ask in this way, instead of using terms like “boyfriend” or “girlfriend,” as “sex assigned at birth” is “terminology the community recognizes, affirms, and feels comfortable with.”

Concerning management of medical risk factors, Dr. Nisly offered some additional perspectives.

For one, she recommended giving PrEP to any patient who has a desire to be on PrEP, noting that this desire can indicate a change in future sexual practices, which the CDC criteria do not anticipate. She also advised in-hospital self-swabbing for extragenital STIs, as this can increase patient comfort and adherence. And, in contrast with Dr. McNamara, Dr. Nisly recommended anal Pap screening for any man that has sex with men and anyone with HIV of any gender. She noted that rates of anal dysplasia are “pretty high” among men who have sex with men, and that detection may reduce cancer risk.

For clinicians who would like to learn more about caring for transgender patients, Dr. Nisly recommended that they start by reading the World Professional Association for Transgender Health guidelines.

“It’s about 300 pages,” Dr. Nisly said, “but it is great.”

Dr. McNamara and Dr. Nisly reported no conflicts of interest.

Although vaccination rates against the human papillomavirus remain low for young adults across the United States, the number of self-reported HPV vaccinations among women and men aged between 18 and 21 years has markedly increased since 2010, according to new research findings.

The findings were published online April 27, 2021, as a research letter in JAMA.

In 2006, the Food and Drug Administration approved the HPV vaccine for the prevention of cervical cancer and genital warts in female patients. Three years later, the FDA approved the vaccine for the prevention of anogenital cancer and warts in male patients.

The Advisory Committee on Immunization Practices and the Centers for Disease Control and Prevention recommend two doses of the HPV vaccine for children aged 11-12 years. Adolescents and young adults may need three doses over the course of 6 months if they start their vaccine series on or following their 15th birthday.

For persons who have not previously received the HPV vaccine or who did not receive adequate doses, the HPV vaccine is recommended through age 26. Data on the rates of vaccination among young adults between 18 and 21 years of age in the United States are sparse, and it is not known how well vaccination programs are progressing in the country.

In the recently published JAMA research letter, investigators from the University of Michigan, Ann Arbor, examined data for the period 2010-2018 from the cross-sectional National Health Interview Survey. Respondents included in the analysis were aged 18-21 years. They were asked whether they had received the HPV vaccine before age 18 and at what age they had been vaccinated against the virus.

The researchers also assessed whether the respondents had received any HPV vaccine dose between the ages of 18 and 21 years. The findings were limited to self-reported vaccination status.

In total, 6,606 women and 6,038 men were included in the analysis. Approximately 42% of women and 16% of men said they had received at least one HPV vaccine dose at any age. The proportion of female patients who reported receiving an HPV vaccine dose significantly increased from 32% in 2010 to 55% in 2018 (P =.001). Similarly, among men, the percentage significantly increased from 2% in 2010 to 34% in 2018 (P <.001).

Approximately 4% of the female respondents and 3% of the male respondents reported that they had received an HPV vaccine between the ages of 18 and 21 years; 46% of women and 29% of men who received the vaccine between these ages completed the recommended vaccination series.

Findings from the study highlight the continual need for improving vaccination rates among vulnerable populations. Lead study author Michelle Chen, MD, MHS, a professor in the department of otolaryngology–head and neck surgery at the University of Michigan, explained in an interview that there are multiple barriers to HPV vaccination among young adults. “These barriers to vaccination among young adults primarily include cost, lack of knowledge and awareness, missed opportunities for vaccination, rapidly changing guidelines, and initial gender-based guidelines,” said Dr. Chen.

Clinicians play a large role in improving vaccination rates among young adults, who may lack awareness of the overall importance of inoculation against the potentially debilitating and deadly virus. Dr. Chen noted that clinicians can lead the way by increasing gender-inclusive awareness of HPV-associated diseases and HPV vaccination, by performing routine vaccine eligibility assessments for young adults regardless of sex, by developing robust reminder and recall strategies to improve series completion rates, and by offering patients resources regarding assistance programs to address cost barriers for uninsured patients.

“Young adult men are particularly vulnerable [to HPV], because they start to age out of pediatric health practices,” added Dr. Chen. “Thus, a multilevel gender-inclusive approach is needed to target clinicians, patients, parents, and community-based organizations.”

Gypsyamber D’Souza, PhD, professor of epidemiology at Johns Hopkins University, Baltimore, said in an interview that the initial uptake of HPV vaccination was slow in the United States but that progress has been made in recent years among persons in the targeted age range of 11-12 years. “However, catch-up vaccination has lagged behind, and sadly, we’re still seeing low uptake in those older ages that are still eligible and where we know there still is tremendous benefit,” she said.

Dr. D’Souza is a lead investigator in the MOUTH trial, which is currently enrolling patients. That trial will examine potential biomarkers for oropharyngeal cancer risk among people with known risk factors for HPV who came of age prior to the rollout of the vaccine.

She explained that many parents want their children to be vaccinated for HPV after they hear about the vaccine, but because the health care system in the United States is an “opt-in” system, rather than an “opt-out” one, parents need to actively seek out vaccination. Children then move toward adulthood without having received the recommended vaccine course. “There are individuals who did not get vaccinated at the ages of 11 and 12 and then forget to ask about it later, or the provider asks about it and the patients don’t have enough information,” Dr. D’Souza said.

She noted that one reason why HPV vaccination rates remain low among young adults is that the vaccine is not often kept in stock other than in pediatric clinics. “Because vaccines expire and clinics don’t have a lot of people in that age group getting vaccinated, they may not have it regularly in stock, making this one reason it might be hard for someone to get vaccinated.”

The HPV vaccine is not effective for clearing HPV once a patient acquires the infection, she added. “So young adulthood is a critical time where we have individuals who still can benefit from being vaccinated, but if we wait too long, they’ll age out of those ages where we see the highest efficacy.”

Ultimately, said Dr. D’Souza, clinicians need to catch people at multiple time points and work to remove barriers to vaccination, including letting patients know that HPV vaccination is covered by insurance. “There’s a lot of opportunity to prevent future cancers in young adults by having care providers for that age group talk about the vaccine and remember to offer it.”

A version of this article first appeared on Medscape.com.

Although vaccination rates against the human papillomavirus remain low for young adults across the United States, the number of self-reported HPV vaccinations among women and men aged between 18 and 21 years has markedly increased since 2010, according to new research findings.

The findings were published online April 27, 2021, as a research letter in JAMA.

In 2006, the Food and Drug Administration approved the HPV vaccine for the prevention of cervical cancer and genital warts in female patients. Three years later, the FDA approved the vaccine for the prevention of anogenital cancer and warts in male patients.

The Advisory Committee on Immunization Practices and the Centers for Disease Control and Prevention recommend two doses of the HPV vaccine for children aged 11-12 years. Adolescents and young adults may need three doses over the course of 6 months if they start their vaccine series on or following their 15th birthday.

For persons who have not previously received the HPV vaccine or who did not receive adequate doses, the HPV vaccine is recommended through age 26. Data on the rates of vaccination among young adults between 18 and 21 years of age in the United States are sparse, and it is not known how well vaccination programs are progressing in the country.

In the recently published JAMA research letter, investigators from the University of Michigan, Ann Arbor, examined data for the period 2010-2018 from the cross-sectional National Health Interview Survey. Respondents included in the analysis were aged 18-21 years. They were asked whether they had received the HPV vaccine before age 18 and at what age they had been vaccinated against the virus.

The researchers also assessed whether the respondents had received any HPV vaccine dose between the ages of 18 and 21 years. The findings were limited to self-reported vaccination status.

In total, 6,606 women and 6,038 men were included in the analysis. Approximately 42% of women and 16% of men said they had received at least one HPV vaccine dose at any age. The proportion of female patients who reported receiving an HPV vaccine dose significantly increased from 32% in 2010 to 55% in 2018 (P =.001). Similarly, among men, the percentage significantly increased from 2% in 2010 to 34% in 2018 (P <.001).

Approximately 4% of the female respondents and 3% of the male respondents reported that they had received an HPV vaccine between the ages of 18 and 21 years; 46% of women and 29% of men who received the vaccine between these ages completed the recommended vaccination series.

Findings from the study highlight the continual need for improving vaccination rates among vulnerable populations. Lead study author Michelle Chen, MD, MHS, a professor in the department of otolaryngology–head and neck surgery at the University of Michigan, explained in an interview that there are multiple barriers to HPV vaccination among young adults. “These barriers to vaccination among young adults primarily include cost, lack of knowledge and awareness, missed opportunities for vaccination, rapidly changing guidelines, and initial gender-based guidelines,” said Dr. Chen.

Clinicians play a large role in improving vaccination rates among young adults, who may lack awareness of the overall importance of inoculation against the potentially debilitating and deadly virus. Dr. Chen noted that clinicians can lead the way by increasing gender-inclusive awareness of HPV-associated diseases and HPV vaccination, by performing routine vaccine eligibility assessments for young adults regardless of sex, by developing robust reminder and recall strategies to improve series completion rates, and by offering patients resources regarding assistance programs to address cost barriers for uninsured patients.

“Young adult men are particularly vulnerable [to HPV], because they start to age out of pediatric health practices,” added Dr. Chen. “Thus, a multilevel gender-inclusive approach is needed to target clinicians, patients, parents, and community-based organizations.”

Gypsyamber D’Souza, PhD, professor of epidemiology at Johns Hopkins University, Baltimore, said in an interview that the initial uptake of HPV vaccination was slow in the United States but that progress has been made in recent years among persons in the targeted age range of 11-12 years. “However, catch-up vaccination has lagged behind, and sadly, we’re still seeing low uptake in those older ages that are still eligible and where we know there still is tremendous benefit,” she said.

Dr. D’Souza is a lead investigator in the MOUTH trial, which is currently enrolling patients. That trial will examine potential biomarkers for oropharyngeal cancer risk among people with known risk factors for HPV who came of age prior to the rollout of the vaccine.

She explained that many parents want their children to be vaccinated for HPV after they hear about the vaccine, but because the health care system in the United States is an “opt-in” system, rather than an “opt-out” one, parents need to actively seek out vaccination. Children then move toward adulthood without having received the recommended vaccine course. “There are individuals who did not get vaccinated at the ages of 11 and 12 and then forget to ask about it later, or the provider asks about it and the patients don’t have enough information,” Dr. D’Souza said.

She noted that one reason why HPV vaccination rates remain low among young adults is that the vaccine is not often kept in stock other than in pediatric clinics. “Because vaccines expire and clinics don’t have a lot of people in that age group getting vaccinated, they may not have it regularly in stock, making this one reason it might be hard for someone to get vaccinated.”

The HPV vaccine is not effective for clearing HPV once a patient acquires the infection, she added. “So young adulthood is a critical time where we have individuals who still can benefit from being vaccinated, but if we wait too long, they’ll age out of those ages where we see the highest efficacy.”

Ultimately, said Dr. D’Souza, clinicians need to catch people at multiple time points and work to remove barriers to vaccination, including letting patients know that HPV vaccination is covered by insurance. “There’s a lot of opportunity to prevent future cancers in young adults by having care providers for that age group talk about the vaccine and remember to offer it.”

A version of this article first appeared on Medscape.com.

Although vaccination rates against the human papillomavirus remain low for young adults across the United States, the number of self-reported HPV vaccinations among women and men aged between 18 and 21 years has markedly increased since 2010, according to new research findings.

The findings were published online April 27, 2021, as a research letter in JAMA.

In 2006, the Food and Drug Administration approved the HPV vaccine for the prevention of cervical cancer and genital warts in female patients. Three years later, the FDA approved the vaccine for the prevention of anogenital cancer and warts in male patients.

The Advisory Committee on Immunization Practices and the Centers for Disease Control and Prevention recommend two doses of the HPV vaccine for children aged 11-12 years. Adolescents and young adults may need three doses over the course of 6 months if they start their vaccine series on or following their 15th birthday.

For persons who have not previously received the HPV vaccine or who did not receive adequate doses, the HPV vaccine is recommended through age 26. Data on the rates of vaccination among young adults between 18 and 21 years of age in the United States are sparse, and it is not known how well vaccination programs are progressing in the country.

In the recently published JAMA research letter, investigators from the University of Michigan, Ann Arbor, examined data for the period 2010-2018 from the cross-sectional National Health Interview Survey. Respondents included in the analysis were aged 18-21 years. They were asked whether they had received the HPV vaccine before age 18 and at what age they had been vaccinated against the virus.

The researchers also assessed whether the respondents had received any HPV vaccine dose between the ages of 18 and 21 years. The findings were limited to self-reported vaccination status.

In total, 6,606 women and 6,038 men were included in the analysis. Approximately 42% of women and 16% of men said they had received at least one HPV vaccine dose at any age. The proportion of female patients who reported receiving an HPV vaccine dose significantly increased from 32% in 2010 to 55% in 2018 (P =.001). Similarly, among men, the percentage significantly increased from 2% in 2010 to 34% in 2018 (P <.001).

Approximately 4% of the female respondents and 3% of the male respondents reported that they had received an HPV vaccine between the ages of 18 and 21 years; 46% of women and 29% of men who received the vaccine between these ages completed the recommended vaccination series.

Findings from the study highlight the continual need for improving vaccination rates among vulnerable populations. Lead study author Michelle Chen, MD, MHS, a professor in the department of otolaryngology–head and neck surgery at the University of Michigan, explained in an interview that there are multiple barriers to HPV vaccination among young adults. “These barriers to vaccination among young adults primarily include cost, lack of knowledge and awareness, missed opportunities for vaccination, rapidly changing guidelines, and initial gender-based guidelines,” said Dr. Chen.

Clinicians play a large role in improving vaccination rates among young adults, who may lack awareness of the overall importance of inoculation against the potentially debilitating and deadly virus. Dr. Chen noted that clinicians can lead the way by increasing gender-inclusive awareness of HPV-associated diseases and HPV vaccination, by performing routine vaccine eligibility assessments for young adults regardless of sex, by developing robust reminder and recall strategies to improve series completion rates, and by offering patients resources regarding assistance programs to address cost barriers for uninsured patients.

“Young adult men are particularly vulnerable [to HPV], because they start to age out of pediatric health practices,” added Dr. Chen. “Thus, a multilevel gender-inclusive approach is needed to target clinicians, patients, parents, and community-based organizations.”

Gypsyamber D’Souza, PhD, professor of epidemiology at Johns Hopkins University, Baltimore, said in an interview that the initial uptake of HPV vaccination was slow in the United States but that progress has been made in recent years among persons in the targeted age range of 11-12 years. “However, catch-up vaccination has lagged behind, and sadly, we’re still seeing low uptake in those older ages that are still eligible and where we know there still is tremendous benefit,” she said.

Dr. D’Souza is a lead investigator in the MOUTH trial, which is currently enrolling patients. That trial will examine potential biomarkers for oropharyngeal cancer risk among people with known risk factors for HPV who came of age prior to the rollout of the vaccine.

She explained that many parents want their children to be vaccinated for HPV after they hear about the vaccine, but because the health care system in the United States is an “opt-in” system, rather than an “opt-out” one, parents need to actively seek out vaccination. Children then move toward adulthood without having received the recommended vaccine course. “There are individuals who did not get vaccinated at the ages of 11 and 12 and then forget to ask about it later, or the provider asks about it and the patients don’t have enough information,” Dr. D’Souza said.

She noted that one reason why HPV vaccination rates remain low among young adults is that the vaccine is not often kept in stock other than in pediatric clinics. “Because vaccines expire and clinics don’t have a lot of people in that age group getting vaccinated, they may not have it regularly in stock, making this one reason it might be hard for someone to get vaccinated.”

The HPV vaccine is not effective for clearing HPV once a patient acquires the infection, she added. “So young adulthood is a critical time where we have individuals who still can benefit from being vaccinated, but if we wait too long, they’ll age out of those ages where we see the highest efficacy.”

Ultimately, said Dr. D’Souza, clinicians need to catch people at multiple time points and work to remove barriers to vaccination, including letting patients know that HPV vaccination is covered by insurance. “There’s a lot of opportunity to prevent future cancers in young adults by having care providers for that age group talk about the vaccine and remember to offer it.”

A version of this article first appeared on Medscape.com.

Annual cases of sexually transmitted infections in the United States jumped for the sixth year in a row in 2019, according to a new Centers for Disease Control and Prevention report that highlights an increase in congenital syphilis and rising rates of syphilis, chlamydia, and gonorrhea in men, especially men who have sex with men (MSM).

The report says nothing about STI rates during the COVID-19 pandemic, when both casual sex and disease screening and surveillance declined significantly, at least in the early months. But epidemiologist Patricia Kissinger, PhD, MPH, from Tulane University School, New Orleans, said in an interview that the findings reflect how “a confluence of factors” drove up rates before the age of COVID. Those factors include online dating, the opioid epidemic, the decline in condom use in the MSM community as HIV became more preventable, and indifference among policy makers and the community at large.

The CDC report, based on data from local health departments, says there were 129,813 cases of syphilis in 2019, up 74% since 2015. Almost 2,000 cases of congenital syphilis were reported, up 279% since 2015, and 128 infants died.

“There’s no reason for us to have congenital syphilis,” said Dr. Kissinger, who noted that the disease can cause birth defects and meningitis in addition to death. “Women should be screened, and it’s relatively easy to treat via penicillin injections.”

Indeed, medical guidelines suggest that pregnant women be routinely tested for syphilis. But that doesn’t always happen because “it falls through the cracks,” Dr. Kissinger said. Or, she added, women might not be tested enough times during their pregnancies: “You have to screen women in the third trimester. You can’t just do it in the first trimester because people do have sex when they’re pregnant.”

Rising congenital syphilis numbers have convinced at least one health system to take action. As of June 1, the University of California, San Diego, will routinely test pregnant women in the emergency department for syphilis in addition to HIV and hepatitis C, Martin Hoenigl, MD, a UCSF infectious disease specialist, said in an interview.

The CDC report also notes 1.8 million cases of chlamydia in 2019, a jump of 19% in 4 years, and a 56% increase in gonorrhea in that time period, to a total of 616,392 cases.

The report says increasing gonorrhea and chlamydia cases in men, especially MSM, could be caused by increased testing/screening, increased transmission, or both. Although women are generally diagnosed with chlamydia more often than men, the report says, numbers among men grew by 32% from 2015 to 2019. And since 2013, rates of gonorrhea among men have risen at a much faster clip than among women.

MSM accounted for most male cases of primary and secondary syphilis in 2019, although the report said the apparent long-term rise in these cases might be slowing.

Many MSM no longer use condoms because they’re using pre-exposure prophylaxis (PrEP) or have undetectable levels of HIV because of treatment, said Jeffrey Klausner, MD, MPH, an STI specialist at the University of Southern California in Los Angeles, said in an interview.

Many MSM might be getting screened much more often for STIs than in the past because frequent screening is required for those on PrEP. However, Dr. Kissinger said some clinics weren’t able to test at times during the pandemic because of a swab shortage. In addition, patients of all types avoided routine medical care during the pandemic, and some medical professionals in the infectious disease field were redirected to COVID care.

Clinical trials have been investigating a possible preventive STI strategy in MSM who don’t wear condoms – prophylaxis, either before or after exposure, with the antibiotic doxycycline. “That’s a very good solution,” Dr. Klausner said, but he believes bigger challenges remain. According to him, the existence of the report itself – which offers statistics from 2 years ago instead of more relevant recent numbers – is evidence of how the federal government isn’t doing enough to fight STIs. “If we’re taking the STD epidemic seriously, there should be timely and regular reporting.” Dr. Klausner said he likes the idea of monthly reports, as well as more funding for prevention.

Instead, he noted, the federal government cut STI prevention funding by 40% in inflation-adjusted dollars from 2002-2003 to 2018-2019, according to the National Coalition of STD Directors. “Burying your head in the sand and hoping the problem goes away is not an effective strategy,” he said.

It’s not clear whether STI rates are on the decline because of pandemic restrictions and stay-at-home orders. Surveys suggest that a dip in casual sex early in pandemic – when much of society shut down – was only temporary, Dr. Klausner said.

Dr. Kissinger disclosed no relevant financial relationships. Dr. Hoenigl reported receiving research funding via his university from Gilead. Dr. Klausner has recently provided consulting services to Danaher, Cepheid, Roche, GlaxoSmithKline, Talis Bio, SpeeDx, and Visby Medical, all manufacturers of diagnostic assays for STIs.

A version of this article first appeared on Medscape.com.

Annual cases of sexually transmitted infections in the United States jumped for the sixth year in a row in 2019, according to a new Centers for Disease Control and Prevention report that highlights an increase in congenital syphilis and rising rates of syphilis, chlamydia, and gonorrhea in men, especially men who have sex with men (MSM).

The report says nothing about STI rates during the COVID-19 pandemic, when both casual sex and disease screening and surveillance declined significantly, at least in the early months. But epidemiologist Patricia Kissinger, PhD, MPH, from Tulane University School, New Orleans, said in an interview that the findings reflect how “a confluence of factors” drove up rates before the age of COVID. Those factors include online dating, the opioid epidemic, the decline in condom use in the MSM community as HIV became more preventable, and indifference among policy makers and the community at large.

The CDC report, based on data from local health departments, says there were 129,813 cases of syphilis in 2019, up 74% since 2015. Almost 2,000 cases of congenital syphilis were reported, up 279% since 2015, and 128 infants died.

“There’s no reason for us to have congenital syphilis,” said Dr. Kissinger, who noted that the disease can cause birth defects and meningitis in addition to death. “Women should be screened, and it’s relatively easy to treat via penicillin injections.”

Indeed, medical guidelines suggest that pregnant women be routinely tested for syphilis. But that doesn’t always happen because “it falls through the cracks,” Dr. Kissinger said. Or, she added, women might not be tested enough times during their pregnancies: “You have to screen women in the third trimester. You can’t just do it in the first trimester because people do have sex when they’re pregnant.”

Rising congenital syphilis numbers have convinced at least one health system to take action. As of June 1, the University of California, San Diego, will routinely test pregnant women in the emergency department for syphilis in addition to HIV and hepatitis C, Martin Hoenigl, MD, a UCSF infectious disease specialist, said in an interview.

The CDC report also notes 1.8 million cases of chlamydia in 2019, a jump of 19% in 4 years, and a 56% increase in gonorrhea in that time period, to a total of 616,392 cases.

The report says increasing gonorrhea and chlamydia cases in men, especially MSM, could be caused by increased testing/screening, increased transmission, or both. Although women are generally diagnosed with chlamydia more often than men, the report says, numbers among men grew by 32% from 2015 to 2019. And since 2013, rates of gonorrhea among men have risen at a much faster clip than among women.

MSM accounted for most male cases of primary and secondary syphilis in 2019, although the report said the apparent long-term rise in these cases might be slowing.

Many MSM no longer use condoms because they’re using pre-exposure prophylaxis (PrEP) or have undetectable levels of HIV because of treatment, said Jeffrey Klausner, MD, MPH, an STI specialist at the University of Southern California in Los Angeles, said in an interview.

Many MSM might be getting screened much more often for STIs than in the past because frequent screening is required for those on PrEP. However, Dr. Kissinger said some clinics weren’t able to test at times during the pandemic because of a swab shortage. In addition, patients of all types avoided routine medical care during the pandemic, and some medical professionals in the infectious disease field were redirected to COVID care.

Clinical trials have been investigating a possible preventive STI strategy in MSM who don’t wear condoms – prophylaxis, either before or after exposure, with the antibiotic doxycycline. “That’s a very good solution,” Dr. Klausner said, but he believes bigger challenges remain. According to him, the existence of the report itself – which offers statistics from 2 years ago instead of more relevant recent numbers – is evidence of how the federal government isn’t doing enough to fight STIs. “If we’re taking the STD epidemic seriously, there should be timely and regular reporting.” Dr. Klausner said he likes the idea of monthly reports, as well as more funding for prevention.

Instead, he noted, the federal government cut STI prevention funding by 40% in inflation-adjusted dollars from 2002-2003 to 2018-2019, according to the National Coalition of STD Directors. “Burying your head in the sand and hoping the problem goes away is not an effective strategy,” he said.

It’s not clear whether STI rates are on the decline because of pandemic restrictions and stay-at-home orders. Surveys suggest that a dip in casual sex early in pandemic – when much of society shut down – was only temporary, Dr. Klausner said.

Dr. Kissinger disclosed no relevant financial relationships. Dr. Hoenigl reported receiving research funding via his university from Gilead. Dr. Klausner has recently provided consulting services to Danaher, Cepheid, Roche, GlaxoSmithKline, Talis Bio, SpeeDx, and Visby Medical, all manufacturers of diagnostic assays for STIs.

A version of this article first appeared on Medscape.com.

Annual cases of sexually transmitted infections in the United States jumped for the sixth year in a row in 2019, according to a new Centers for Disease Control and Prevention report that highlights an increase in congenital syphilis and rising rates of syphilis, chlamydia, and gonorrhea in men, especially men who have sex with men (MSM).

The report says nothing about STI rates during the COVID-19 pandemic, when both casual sex and disease screening and surveillance declined significantly, at least in the early months. But epidemiologist Patricia Kissinger, PhD, MPH, from Tulane University School, New Orleans, said in an interview that the findings reflect how “a confluence of factors” drove up rates before the age of COVID. Those factors include online dating, the opioid epidemic, the decline in condom use in the MSM community as HIV became more preventable, and indifference among policy makers and the community at large.

The CDC report, based on data from local health departments, says there were 129,813 cases of syphilis in 2019, up 74% since 2015. Almost 2,000 cases of congenital syphilis were reported, up 279% since 2015, and 128 infants died.

“There’s no reason for us to have congenital syphilis,” said Dr. Kissinger, who noted that the disease can cause birth defects and meningitis in addition to death. “Women should be screened, and it’s relatively easy to treat via penicillin injections.”

Indeed, medical guidelines suggest that pregnant women be routinely tested for syphilis. But that doesn’t always happen because “it falls through the cracks,” Dr. Kissinger said. Or, she added, women might not be tested enough times during their pregnancies: “You have to screen women in the third trimester. You can’t just do it in the first trimester because people do have sex when they’re pregnant.”

Rising congenital syphilis numbers have convinced at least one health system to take action. As of June 1, the University of California, San Diego, will routinely test pregnant women in the emergency department for syphilis in addition to HIV and hepatitis C, Martin Hoenigl, MD, a UCSF infectious disease specialist, said in an interview.

The CDC report also notes 1.8 million cases of chlamydia in 2019, a jump of 19% in 4 years, and a 56% increase in gonorrhea in that time period, to a total of 616,392 cases.

The report says increasing gonorrhea and chlamydia cases in men, especially MSM, could be caused by increased testing/screening, increased transmission, or both. Although women are generally diagnosed with chlamydia more often than men, the report says, numbers among men grew by 32% from 2015 to 2019. And since 2013, rates of gonorrhea among men have risen at a much faster clip than among women.

MSM accounted for most male cases of primary and secondary syphilis in 2019, although the report said the apparent long-term rise in these cases might be slowing.

Many MSM no longer use condoms because they’re using pre-exposure prophylaxis (PrEP) or have undetectable levels of HIV because of treatment, said Jeffrey Klausner, MD, MPH, an STI specialist at the University of Southern California in Los Angeles, said in an interview.

Many MSM might be getting screened much more often for STIs than in the past because frequent screening is required for those on PrEP. However, Dr. Kissinger said some clinics weren’t able to test at times during the pandemic because of a swab shortage. In addition, patients of all types avoided routine medical care during the pandemic, and some medical professionals in the infectious disease field were redirected to COVID care.

Clinical trials have been investigating a possible preventive STI strategy in MSM who don’t wear condoms – prophylaxis, either before or after exposure, with the antibiotic doxycycline. “That’s a very good solution,” Dr. Klausner said, but he believes bigger challenges remain. According to him, the existence of the report itself – which offers statistics from 2 years ago instead of more relevant recent numbers – is evidence of how the federal government isn’t doing enough to fight STIs. “If we’re taking the STD epidemic seriously, there should be timely and regular reporting.” Dr. Klausner said he likes the idea of monthly reports, as well as more funding for prevention.

Instead, he noted, the federal government cut STI prevention funding by 40% in inflation-adjusted dollars from 2002-2003 to 2018-2019, according to the National Coalition of STD Directors. “Burying your head in the sand and hoping the problem goes away is not an effective strategy,” he said.

It’s not clear whether STI rates are on the decline because of pandemic restrictions and stay-at-home orders. Surveys suggest that a dip in casual sex early in pandemic – when much of society shut down – was only temporary, Dr. Klausner said.

Dr. Kissinger disclosed no relevant financial relationships. Dr. Hoenigl reported receiving research funding via his university from Gilead. Dr. Klausner has recently provided consulting services to Danaher, Cepheid, Roche, GlaxoSmithKline, Talis Bio, SpeeDx, and Visby Medical, all manufacturers of diagnostic assays for STIs.

A version of this article first appeared on Medscape.com.

An investigational vaginal gel significantly reduced urogenital chlamydia and gonorrhea in women at high risk for infection, compared with placebo, opening up new possibilities for an on-demand prevention option. Investigators of a randomized trial reported these findings in the American Journal of Obstetrics and Gynecology.

Rates of Chlamydia trachomatis (CT) and Neisseria gonorrhoeae (GC) are on the rise in the United States, despite wide availability of male and female condoms to prevent sexually transmitted infections. This suggests that women need a more discrete method that they can better control. Other vaginal microbicides developed over the last few decades haven’t performed well in protecting against STIs or HIV in clinical trials.

The slightly alkaline nature of human semen has the potential to neutralize vaginal pH after intercourse, creating a more vulnerable environment for STIs. EVO100 is an investigational antimicrobial, bioadhesive vaginal gel that contains L-lactic acid, citric acid, and potassium bitartrate. In preclinical studies, it was highly effective at buffering the alkaline properties of human semen and maintaining vaginal pH levels. Patients generally tolerated it well, aside from some reports of vaginal itching and burning.

An investigational vaginal gel significantly reduced urogenital chlamydia and gonorrhea in women at high risk for infection, compared with placebo, opening up new possibilities for an on-demand prevention option. Investigators of a randomized trial reported these findings in the American Journal of Obstetrics and Gynecology.

Rates of Chlamydia trachomatis (CT) and Neisseria gonorrhoeae (GC) are on the rise in the United States, despite wide availability of male and female condoms to prevent sexually transmitted infections. This suggests that women need a more discrete method that they can better control. Other vaginal microbicides developed over the last few decades haven’t performed well in protecting against STIs or HIV in clinical trials.

The slightly alkaline nature of human semen has the potential to neutralize vaginal pH after intercourse, creating a more vulnerable environment for STIs. EVO100 is an investigational antimicrobial, bioadhesive vaginal gel that contains L-lactic acid, citric acid, and potassium bitartrate. In preclinical studies, it was highly effective at buffering the alkaline properties of human semen and maintaining vaginal pH levels. Patients generally tolerated it well, aside from some reports of vaginal itching and burning.

An investigational vaginal gel significantly reduced urogenital chlamydia and gonorrhea in women at high risk for infection, compared with placebo, opening up new possibilities for an on-demand prevention option. Investigators of a randomized trial reported these findings in the American Journal of Obstetrics and Gynecology.

Rates of Chlamydia trachomatis (CT) and Neisseria gonorrhoeae (GC) are on the rise in the United States, despite wide availability of male and female condoms to prevent sexually transmitted infections. This suggests that women need a more discrete method that they can better control. Other vaginal microbicides developed over the last few decades haven’t performed well in protecting against STIs or HIV in clinical trials.

The slightly alkaline nature of human semen has the potential to neutralize vaginal pH after intercourse, creating a more vulnerable environment for STIs. EVO100 is an investigational antimicrobial, bioadhesive vaginal gel that contains L-lactic acid, citric acid, and potassium bitartrate. In preclinical studies, it was highly effective at buffering the alkaline properties of human semen and maintaining vaginal pH levels. Patients generally tolerated it well, aside from some reports of vaginal itching and burning.

Approximately 68 million cases of sexually transmitted infections are reported in the United States each year, yet antiquated approaches to STI prevention, in addition to health care inequities and lack of funding, have substantially prevented providers and officials from curbing the spread. In response to rising case numbers, the National Academies of Sciences, Engineering, and Medicine released a report this week with recommendations to modernize the nation’s STI surveillance and monitoring systems, increase the capabilities of the STI workforce, and address structural barriers to STI prevention and access to care.

Given the rising rates of STIs and the urgent, unmet need for prevention and treatment, the Centers for Disease Control and Prevention’s National Association of County and City Health Officials commissioned the National Academies to develop actionable recommendations to control STIs. The new report marks a long road toward the public’s willingness to discuss STDs, or what a 1997 Institute of Medicine report described as a “hidden epidemic” that had been largely neglected in public discourse.

Jeffrey Crowley, MPH, committee member and an author of the new National Academies report, said in an interview that, despite the increased openness to discuss STIs in today’s society, STD rates since the late 1990s have gotten much worse. Lack of appropriate governmental funding for research and drug development, structural inequities, and persisting stigmatization are key drivers for rising rates, explained Mr. Crowley.
 

Addressing structural barriers to STI prevention

Playing a prominent role in the National Academies report are issues of structural and institutional barriers to STI prevention and care. In the report, the authors argued that a policy-based approach should seek to promote sexual health and eliminate structural racism and inequities to drive improvements in STI management.

“We think it’s these structural factors that are central to all the inequities that play out,” said Mr. Crowley, “and they either don’t get any attention or, if they do get attention, people don’t really speak concretely enough about how we address them.”

The concrete steps, as outlined in the report, begin with addressing factors that involve the health care industry at large. Automatic STI screening as part of routine visits, alerts in electronic health records that remind clinicians to screen patients, and reminders to test patients can be initial low-cost actions health care systems can take to improve STI testing, particularly in marginalized communities. Mr. Crowley noted that greater evidence is needed to support further steps to address structural factors that contribute to barriers in STI screening and treatment access.

Given the complexities inherent in structural barriers to STI care, the report calls on a whole-government response, in partnership with affected communities, to normalize discussions involving sexual well-being. “We have to ask ourselves how we can build healthier communities and how can we integrate sexual health into that dialogue in a way that improves our response to STI prevention and control,” Mr. Crowley explained.
 

Harnessing AI and dating apps

The report also addresses the power of artificial intelligence to predict STI rates and to discover trends in risk factors, both of which may improve STI surveillance and assist in the development of tailored interventions. The report calls for policy that will enable companies and the government to capitalize on AI to evaluate large collections of data in EHRs, insurance claims databases, social media, search engines, and even dating apps.

In particular, dating apps could be an avenue through which the public and private sectors could improve STI prevention, diagnosis, and treatment. “People want to focus on this idea of whether these apps increase transmission risk,” said Mr. Crowley. “But we would say that this is asking the wrong question, because these technologies are not going away.” He noted that private and public enterprises could work together to leverage these technologies to increase awareness of prevention and testing.
 

Unifying the STI/HIV and COVID-19 workforce

The report also recommends that the nation unify the STI/HIV workforce with the COVID-19 workforce. Given the high levels of expertise in these professional working groups, the report suggests unification could potentially address both the current crisis and possible future disease outbreaks. Combining COVID-19 response teams with underresourced STI/HIV programs may also improve the delivery of STI testing, considering that STI testing programs have had to compete for resources during the pandemic.

Addressing stigma

The National Academies report also addresses the ongoing issue of stigma, which results from “blaming” individuals and the choices they make so as to create shame, embarrassment, and discrimination. Because of stigma, sexually active people may be unwilling to seek recommended screening, which can lead to delays in diagnosis and treatment and can increase the risk for negative health outcomes.

“As a nation, we’ve almost focused too intently on individual-level factors in a way that’s driven stigma and really hasn’t been helpful for combating the problem,” said Mr. Crowley. He added that, instead of focusing solely on individual-level choices, the nation should instead work to reframe sexual health as a key aspect of overall physical, mental, and emotional well-being. Doing so could create more opportunities to address structural barriers to STI prevention and ensure that more prevention and screening services are available in stigma-free environments.

“I know what we’re recommending is ambitious, but it’s not too big to be achieved, and we’re not saying tomorrow we’re going to transform the world,” Mr. Crowley concluded. “It’s a puzzle with many pieces, but the long-term impact is really all of these pieces fitting together so that, over time, we can reduce the burden STIs have on the population.”
 

Implications for real-world change

H. Hunter Handsfield, MD, professor emeritus of medicine for the Center for AIDS and STD at the University of Washington, Seattle, said in an interview that this report essentially is a response to evolving societal changes, new and emerging means of social engagement, and increased focus on racial/ethnic disparities. “These features have all come to the forefront of health care and general policy discussions in recent years,” said Dr. Handsfield, who was not part of the committee that developed the NAS report.

Greater scrutiny on public health infrastructure and its relationship with health disparities in the United States makes the publication of these new recommendations especially appropriate during this era of enhanced focus on social justice. Although the report features the tone and quality needed to bolster bipartisan support, said Dr. Handsfield, it’s hard to predict whether such support will come to fruition in today’s political environment.

In terms of the effects the recommendations may have on STI rates, Dr. Handsfield noted that cherry-picking elements from the report to direct policy may result in its having only a trivial impact. “The report is really an appropriate and necessary response, and almost all the recommendations made can be helpful,” he said, “but for true effectiveness, all the elements need to be implemented to drive policy and funding.”

A version of this article first appeared on Medscape.com.

Approximately 68 million cases of sexually transmitted infections are reported in the United States each year, yet antiquated approaches to STI prevention, in addition to health care inequities and lack of funding, have substantially prevented providers and officials from curbing the spread. In response to rising case numbers, the National Academies of Sciences, Engineering, and Medicine released a report this week with recommendations to modernize the nation’s STI surveillance and monitoring systems, increase the capabilities of the STI workforce, and address structural barriers to STI prevention and access to care.

Given the rising rates of STIs and the urgent, unmet need for prevention and treatment, the Centers for Disease Control and Prevention’s National Association of County and City Health Officials commissioned the National Academies to develop actionable recommendations to control STIs. The new report marks a long road toward the public’s willingness to discuss STDs, or what a 1997 Institute of Medicine report described as a “hidden epidemic” that had been largely neglected in public discourse.

Jeffrey Crowley, MPH, committee member and an author of the new National Academies report, said in an interview that, despite the increased openness to discuss STIs in today’s society, STD rates since the late 1990s have gotten much worse. Lack of appropriate governmental funding for research and drug development, structural inequities, and persisting stigmatization are key drivers for rising rates, explained Mr. Crowley.
 

Addressing structural barriers to STI prevention

Playing a prominent role in the National Academies report are issues of structural and institutional barriers to STI prevention and care. In the report, the authors argued that a policy-based approach should seek to promote sexual health and eliminate structural racism and inequities to drive improvements in STI management.

“We think it’s these structural factors that are central to all the inequities that play out,” said Mr. Crowley, “and they either don’t get any attention or, if they do get attention, people don’t really speak concretely enough about how we address them.”

The concrete steps, as outlined in the report, begin with addressing factors that involve the health care industry at large. Automatic STI screening as part of routine visits, alerts in electronic health records that remind clinicians to screen patients, and reminders to test patients can be initial low-cost actions health care systems can take to improve STI testing, particularly in marginalized communities. Mr. Crowley noted that greater evidence is needed to support further steps to address structural factors that contribute to barriers in STI screening and treatment access.

Given the complexities inherent in structural barriers to STI care, the report calls on a whole-government response, in partnership with affected communities, to normalize discussions involving sexual well-being. “We have to ask ourselves how we can build healthier communities and how can we integrate sexual health into that dialogue in a way that improves our response to STI prevention and control,” Mr. Crowley explained.
 

Harnessing AI and dating apps

The report also addresses the power of artificial intelligence to predict STI rates and to discover trends in risk factors, both of which may improve STI surveillance and assist in the development of tailored interventions. The report calls for policy that will enable companies and the government to capitalize on AI to evaluate large collections of data in EHRs, insurance claims databases, social media, search engines, and even dating apps.

In particular, dating apps could be an avenue through which the public and private sectors could improve STI prevention, diagnosis, and treatment. “People want to focus on this idea of whether these apps increase transmission risk,” said Mr. Crowley. “But we would say that this is asking the wrong question, because these technologies are not going away.” He noted that private and public enterprises could work together to leverage these technologies to increase awareness of prevention and testing.
 

Unifying the STI/HIV and COVID-19 workforce

The report also recommends that the nation unify the STI/HIV workforce with the COVID-19 workforce. Given the high levels of expertise in these professional working groups, the report suggests unification could potentially address both the current crisis and possible future disease outbreaks. Combining COVID-19 response teams with underresourced STI/HIV programs may also improve the delivery of STI testing, considering that STI testing programs have had to compete for resources during the pandemic.

Addressing stigma

The National Academies report also addresses the ongoing issue of stigma, which results from “blaming” individuals and the choices they make so as to create shame, embarrassment, and discrimination. Because of stigma, sexually active people may be unwilling to seek recommended screening, which can lead to delays in diagnosis and treatment and can increase the risk for negative health outcomes.

“As a nation, we’ve almost focused too intently on individual-level factors in a way that’s driven stigma and really hasn’t been helpful for combating the problem,” said Mr. Crowley. He added that, instead of focusing solely on individual-level choices, the nation should instead work to reframe sexual health as a key aspect of overall physical, mental, and emotional well-being. Doing so could create more opportunities to address structural barriers to STI prevention and ensure that more prevention and screening services are available in stigma-free environments.

“I know what we’re recommending is ambitious, but it’s not too big to be achieved, and we’re not saying tomorrow we’re going to transform the world,” Mr. Crowley concluded. “It’s a puzzle with many pieces, but the long-term impact is really all of these pieces fitting together so that, over time, we can reduce the burden STIs have on the population.”
 

Implications for real-world change

H. Hunter Handsfield, MD, professor emeritus of medicine for the Center for AIDS and STD at the University of Washington, Seattle, said in an interview that this report essentially is a response to evolving societal changes, new and emerging means of social engagement, and increased focus on racial/ethnic disparities. “These features have all come to the forefront of health care and general policy discussions in recent years,” said Dr. Handsfield, who was not part of the committee that developed the NAS report.

Greater scrutiny on public health infrastructure and its relationship with health disparities in the United States makes the publication of these new recommendations especially appropriate during this era of enhanced focus on social justice. Although the report features the tone and quality needed to bolster bipartisan support, said Dr. Handsfield, it’s hard to predict whether such support will come to fruition in today’s political environment.

In terms of the effects the recommendations may have on STI rates, Dr. Handsfield noted that cherry-picking elements from the report to direct policy may result in its having only a trivial impact. “The report is really an appropriate and necessary response, and almost all the recommendations made can be helpful,” he said, “but for true effectiveness, all the elements need to be implemented to drive policy and funding.”

A version of this article first appeared on Medscape.com.

Approximately 68 million cases of sexually transmitted infections are reported in the United States each year, yet antiquated approaches to STI prevention, in addition to health care inequities and lack of funding, have substantially prevented providers and officials from curbing the spread. In response to rising case numbers, the National Academies of Sciences, Engineering, and Medicine released a report this week with recommendations to modernize the nation’s STI surveillance and monitoring systems, increase the capabilities of the STI workforce, and address structural barriers to STI prevention and access to care.

Given the rising rates of STIs and the urgent, unmet need for prevention and treatment, the Centers for Disease Control and Prevention’s National Association of County and City Health Officials commissioned the National Academies to develop actionable recommendations to control STIs. The new report marks a long road toward the public’s willingness to discuss STDs, or what a 1997 Institute of Medicine report described as a “hidden epidemic” that had been largely neglected in public discourse.

Jeffrey Crowley, MPH, committee member and an author of the new National Academies report, said in an interview that, despite the increased openness to discuss STIs in today’s society, STD rates since the late 1990s have gotten much worse. Lack of appropriate governmental funding for research and drug development, structural inequities, and persisting stigmatization are key drivers for rising rates, explained Mr. Crowley.
 

Addressing structural barriers to STI prevention

Playing a prominent role in the National Academies report are issues of structural and institutional barriers to STI prevention and care. In the report, the authors argued that a policy-based approach should seek to promote sexual health and eliminate structural racism and inequities to drive improvements in STI management.

“We think it’s these structural factors that are central to all the inequities that play out,” said Mr. Crowley, “and they either don’t get any attention or, if they do get attention, people don’t really speak concretely enough about how we address them.”

The concrete steps, as outlined in the report, begin with addressing factors that involve the health care industry at large. Automatic STI screening as part of routine visits, alerts in electronic health records that remind clinicians to screen patients, and reminders to test patients can be initial low-cost actions health care systems can take to improve STI testing, particularly in marginalized communities. Mr. Crowley noted that greater evidence is needed to support further steps to address structural factors that contribute to barriers in STI screening and treatment access.

Given the complexities inherent in structural barriers to STI care, the report calls on a whole-government response, in partnership with affected communities, to normalize discussions involving sexual well-being. “We have to ask ourselves how we can build healthier communities and how can we integrate sexual health into that dialogue in a way that improves our response to STI prevention and control,” Mr. Crowley explained.
 

Harnessing AI and dating apps

The report also addresses the power of artificial intelligence to predict STI rates and to discover trends in risk factors, both of which may improve STI surveillance and assist in the development of tailored interventions. The report calls for policy that will enable companies and the government to capitalize on AI to evaluate large collections of data in EHRs, insurance claims databases, social media, search engines, and even dating apps.

In particular, dating apps could be an avenue through which the public and private sectors could improve STI prevention, diagnosis, and treatment. “People want to focus on this idea of whether these apps increase transmission risk,” said Mr. Crowley. “But we would say that this is asking the wrong question, because these technologies are not going away.” He noted that private and public enterprises could work together to leverage these technologies to increase awareness of prevention and testing.
 

Unifying the STI/HIV and COVID-19 workforce

The report also recommends that the nation unify the STI/HIV workforce with the COVID-19 workforce. Given the high levels of expertise in these professional working groups, the report suggests unification could potentially address both the current crisis and possible future disease outbreaks. Combining COVID-19 response teams with underresourced STI/HIV programs may also improve the delivery of STI testing, considering that STI testing programs have had to compete for resources during the pandemic.

Addressing stigma

The National Academies report also addresses the ongoing issue of stigma, which results from “blaming” individuals and the choices they make so as to create shame, embarrassment, and discrimination. Because of stigma, sexually active people may be unwilling to seek recommended screening, which can lead to delays in diagnosis and treatment and can increase the risk for negative health outcomes.

“As a nation, we’ve almost focused too intently on individual-level factors in a way that’s driven stigma and really hasn’t been helpful for combating the problem,” said Mr. Crowley. He added that, instead of focusing solely on individual-level choices, the nation should instead work to reframe sexual health as a key aspect of overall physical, mental, and emotional well-being. Doing so could create more opportunities to address structural barriers to STI prevention and ensure that more prevention and screening services are available in stigma-free environments.

“I know what we’re recommending is ambitious, but it’s not too big to be achieved, and we’re not saying tomorrow we’re going to transform the world,” Mr. Crowley concluded. “It’s a puzzle with many pieces, but the long-term impact is really all of these pieces fitting together so that, over time, we can reduce the burden STIs have on the population.”
 

Implications for real-world change

H. Hunter Handsfield, MD, professor emeritus of medicine for the Center for AIDS and STD at the University of Washington, Seattle, said in an interview that this report essentially is a response to evolving societal changes, new and emerging means of social engagement, and increased focus on racial/ethnic disparities. “These features have all come to the forefront of health care and general policy discussions in recent years,” said Dr. Handsfield, who was not part of the committee that developed the NAS report.

Greater scrutiny on public health infrastructure and its relationship with health disparities in the United States makes the publication of these new recommendations especially appropriate during this era of enhanced focus on social justice. Although the report features the tone and quality needed to bolster bipartisan support, said Dr. Handsfield, it’s hard to predict whether such support will come to fruition in today’s political environment.

In terms of the effects the recommendations may have on STI rates, Dr. Handsfield noted that cherry-picking elements from the report to direct policy may result in its having only a trivial impact. “The report is really an appropriate and necessary response, and almost all the recommendations made can be helpful,” he said, “but for true effectiveness, all the elements need to be implemented to drive policy and funding.”

A version of this article first appeared on Medscape.com.

A Zika virus vaccine candidate prompted antibody responses in 80% of individuals who received two doses in a phase 1 study.

©Aunt_Spray/Thinkstock

Although Zika cases have declined in recent years, “geographic expansion of the Aedes aegypti mosquito to areas where population-level immunity is low poses a substantial risk for future epidemics,” wrote Nadine C. Salisch, PhD, of Janssen Vaccines and Prevention, Leiden, the Netherlands, and colleagues in a paper published in Annals of Internal Medicine.

No vaccine against Zika is yet available, although more than 10 candidates have been studied in preclinical trials to date, they said.

The researchers randomized 100 healthy adult volunteers to an experimental Zika vaccine candidate known as Ad26.ZIKV.001 in either one-dose or two-dose regimens of 5x10¹⁰ viral particles (low dose) or 1x10¹¹ viral particles (high dose) or placebo. Approximately half (55%) of the participants were women, and 72% were White.

Approximately 80% of patients in both two-dose groups showed antibody responses for a year after vaccination. Geometric mean titers (GMTs) reached peak of 823.4 in the low-dose/low-dose group and 961.5 in the high-dose/high-dose group. At day 365, the GMTs for these groups were 68.7 and 87.0, respectively.

A single high-dose vaccine achieved a similar level of neutralizing antibody titers, but lower peak neutralizing responses than the two-dose strategies, the researchers noted.

Most of the reported adverse events were mild to moderate, and short lived; the most common were injection site pain or tenderness, headache, and fatigue, the researchers said. After the first vaccination, 75% of participants in the low-dose groups, 88% of participants in high-dose groups, and 45% of participants receiving placebo reported local adverse events. In addition, 73%, 83%, and 40% of the participants in the low-dose, high-dose, and placebo groups, respectively, reported systemic adverse events. Reports were similar after the second vaccination. Two serious adverse events not related to vaccination were reported; one case of right lower lobe pneumonia and one case of incomplete spontaneous abortion.

The researchers also explored protective efficacy through a nonlethal mouse challenge model. “Transfer of 6 mg of IgG from Ad26.ZIKV.001 vaccines conferred complete protection from viremia in most recipient animals, with statistically significantly decreased breakthrough rates and cumulative viral loads per group compared with placebo,” they said.

The study findings were limited by the inability to assess safety and immunogenicity in an endemic area, the researchers noted. However, “Ad26.ZIKV.001 induces potent ZIKV-specific neutralizing responses with durability of at least 1 year, which supports further clinical development if an unmet medical need reemerges,” they said. “In addition, these data underscore the performance of the Ad26 vaccine platform, which Janssen is using for different infectious diseases, including COVID-19,” they noted.
 

Ad26 vector platform shows consistency

“Development of the investigational Janssen Zika vaccine candidate was initiated in 2015, and while the incidence of Zika virus has declined since the 2015-2016 outbreak, spread of the ‘carrier’ Aedes aegypti mosquito to areas where population-level immunity is low poses a substantial risk for future epidemics,” lead author Dr. Salisch said in an interview. For this reason, researchers say the vaccine warrants further development should the need reemerge, she said.

“Our research has found that while a single higher-dose regimen had lower peak neutralizing responses than a two-dose regimen, it achieved a similar level of neutralizing antibody responses at 1 year, an encouraging finding that shows our vaccine may be a useful tool to curb Zika epidemics,” Dr. Salisch noted. “Previous experience with the Ad26 vector platform across our investigational vaccine programs have yielded similarly promising results, most recently with our investigational Janssen COVID-19 vaccine program, for which phase 3 data show a single-dose vaccine met all primary and key secondary endpoints,” she said.

“The biggest barrier [to further development of the candidate vaccine] is one that we actually consider ourselves fortunate to have: The very low incidence of reported Zika cases currently reported worldwide,” Dr. Salisch said. “However, the current Zika case rate can change at any time, and in the event the situation demands it, we are open to alternative regulatory pathways to help us glean the necessary insights on vaccine safety and efficacy to further advance the development of this candidate,” she emphasized.

As for additional research, “there are still questions surrounding Zika transmission and the pathomechanism of congenital Zika syndrome,” said Dr. Salisch. “Our hope is that a correlate of protection against Zika disease, and in particular against congenital Zika syndrome, can be identified,” she said.  

Consider pregnant women in next phase of research

“A major hurdle in ZIKV vaccine development is the inability to conduct large efficacy studies in the absence of a current outbreak,” Ann Chahroudi, MD, of Emory University, Atlanta, and Sallie Permar, MD, of Weill Cornell Medicine, New York, wrote in an accompanying editorial.

The current study provided some efficacy data using a mouse model, but “these data are obviously not conclusive for human protection,” they said.

“A further challenge for ZIKV vaccine efficacy trials will be to demonstrate fetal protection from [congenital Zika syndrome] after adult immunization. There should be a clear plan to readily deploy phase 3 trials for the most promising vaccines to emerge from phase 1 and 2 in the event of an outbreak, as was implemented for Ebola, including infant follow-up,” they emphasized.

The editorialists noted that the study did not include pregnant women, who represent a major target for immunization, but they said that vaccination of pregnant women against other neonatal pathogens such as influenza and tetanus has been effective. “Candidate ZIKV vaccines proven safe in phase 1 trials should immediately be assessed for safety and efficacy in pregnant women,” they said. Although Zika infections are not at epidemic levels currently, resurgence remains a possibility and the coronavirus pandemic “has taught us that preparedness for emerging infections is crucial,” they said.
 

Zika vaccine research is a challenge worth pursuing

“It is important to continue Zika vaccine research because of the unpredictable nature of that infection,” Kevin Ault, MD, of the University of Kansas, Kansas City, said in an interview. “Several times Zika has gained a foothold in unexposed and vulnerable populations,” Dr. Ault said.  “Additionally, there are some data about using this vector during pregnancy, and eventually this vaccine may prevent the birth defects associated with Zika infections during pregnancy, he noted.

Dr. Ault said he was not surprised by the study findings. “This is a promising early phase vaccine candidate, and this adenovirus vector has been used in other similar trials,” he said. Potential barriers to vaccine development include the challenge of conducting late phase clinical trials in pregnant women, he noted. “The relevant endpoint is going to be clinical disease, and one of the most critical populations is pregnant women,” he said. In addition, “later phase 3 trials would be conducted in a population where there is an ongoing Zika outbreak,” Dr. Ault emphasized.   

The study was supported by Janssen Vaccines and Infectious Diseases.

Dr. Chahroudi had no financial conflicts to disclose. Dr. Permar disclosed grants from Merck and Moderna unrelated to the current study. Dr. Ault had no relevant financial conflicts to disclose; he has served as an adviser to the Centers for Disease Control and Prevention, the World Medical Association, the National Vaccine Program Office, and the National Institute for Allergy and Infectious Diseases. He is a fellow of the Infectious Disease Society of American and a fellow of ACOG. 

A Zika virus vaccine candidate prompted antibody responses in 80% of individuals who received two doses in a phase 1 study.

©Aunt_Spray/Thinkstock

Although Zika cases have declined in recent years, “geographic expansion of the Aedes aegypti mosquito to areas where population-level immunity is low poses a substantial risk for future epidemics,” wrote Nadine C. Salisch, PhD, of Janssen Vaccines and Prevention, Leiden, the Netherlands, and colleagues in a paper published in Annals of Internal Medicine.

No vaccine against Zika is yet available, although more than 10 candidates have been studied in preclinical trials to date, they said.

The researchers randomized 100 healthy adult volunteers to an experimental Zika vaccine candidate known as Ad26.ZIKV.001 in either one-dose or two-dose regimens of 5x10¹⁰ viral particles (low dose) or 1x10¹¹ viral particles (high dose) or placebo. Approximately half (55%) of the participants were women, and 72% were White.

Approximately 80% of patients in both two-dose groups showed antibody responses for a year after vaccination. Geometric mean titers (GMTs) reached peak of 823.4 in the low-dose/low-dose group and 961.5 in the high-dose/high-dose group. At day 365, the GMTs for these groups were 68.7 and 87.0, respectively.

A single high-dose vaccine achieved a similar level of neutralizing antibody titers, but lower peak neutralizing responses than the two-dose strategies, the researchers noted.

Most of the reported adverse events were mild to moderate, and short lived; the most common were injection site pain or tenderness, headache, and fatigue, the researchers said. After the first vaccination, 75% of participants in the low-dose groups, 88% of participants in high-dose groups, and 45% of participants receiving placebo reported local adverse events. In addition, 73%, 83%, and 40% of the participants in the low-dose, high-dose, and placebo groups, respectively, reported systemic adverse events. Reports were similar after the second vaccination. Two serious adverse events not related to vaccination were reported; one case of right lower lobe pneumonia and one case of incomplete spontaneous abortion.

The researchers also explored protective efficacy through a nonlethal mouse challenge model. “Transfer of 6 mg of IgG from Ad26.ZIKV.001 vaccines conferred complete protection from viremia in most recipient animals, with statistically significantly decreased breakthrough rates and cumulative viral loads per group compared with placebo,” they said.

The study findings were limited by the inability to assess safety and immunogenicity in an endemic area, the researchers noted. However, “Ad26.ZIKV.001 induces potent ZIKV-specific neutralizing responses with durability of at least 1 year, which supports further clinical development if an unmet medical need reemerges,” they said. “In addition, these data underscore the performance of the Ad26 vaccine platform, which Janssen is using for different infectious diseases, including COVID-19,” they noted.
 

Ad26 vector platform shows consistency

“Development of the investigational Janssen Zika vaccine candidate was initiated in 2015, and while the incidence of Zika virus has declined since the 2015-2016 outbreak, spread of the ‘carrier’ Aedes aegypti mosquito to areas where population-level immunity is low poses a substantial risk for future epidemics,” lead author Dr. Salisch said in an interview. For this reason, researchers say the vaccine warrants further development should the need reemerge, she said.

“Our research has found that while a single higher-dose regimen had lower peak neutralizing responses than a two-dose regimen, it achieved a similar level of neutralizing antibody responses at 1 year, an encouraging finding that shows our vaccine may be a useful tool to curb Zika epidemics,” Dr. Salisch noted. “Previous experience with the Ad26 vector platform across our investigational vaccine programs have yielded similarly promising results, most recently with our investigational Janssen COVID-19 vaccine program, for which phase 3 data show a single-dose vaccine met all primary and key secondary endpoints,” she said.

“The biggest barrier [to further development of the candidate vaccine] is one that we actually consider ourselves fortunate to have: The very low incidence of reported Zika cases currently reported worldwide,” Dr. Salisch said. “However, the current Zika case rate can change at any time, and in the event the situation demands it, we are open to alternative regulatory pathways to help us glean the necessary insights on vaccine safety and efficacy to further advance the development of this candidate,” she emphasized.

As for additional research, “there are still questions surrounding Zika transmission and the pathomechanism of congenital Zika syndrome,” said Dr. Salisch. “Our hope is that a correlate of protection against Zika disease, and in particular against congenital Zika syndrome, can be identified,” she said.  

Consider pregnant women in next phase of research

“A major hurdle in ZIKV vaccine development is the inability to conduct large efficacy studies in the absence of a current outbreak,” Ann Chahroudi, MD, of Emory University, Atlanta, and Sallie Permar, MD, of Weill Cornell Medicine, New York, wrote in an accompanying editorial.

The current study provided some efficacy data using a mouse model, but “these data are obviously not conclusive for human protection,” they said.

“A further challenge for ZIKV vaccine efficacy trials will be to demonstrate fetal protection from [congenital Zika syndrome] after adult immunization. There should be a clear plan to readily deploy phase 3 trials for the most promising vaccines to emerge from phase 1 and 2 in the event of an outbreak, as was implemented for Ebola, including infant follow-up,” they emphasized.

The editorialists noted that the study did not include pregnant women, who represent a major target for immunization, but they said that vaccination of pregnant women against other neonatal pathogens such as influenza and tetanus has been effective. “Candidate ZIKV vaccines proven safe in phase 1 trials should immediately be assessed for safety and efficacy in pregnant women,” they said. Although Zika infections are not at epidemic levels currently, resurgence remains a possibility and the coronavirus pandemic “has taught us that preparedness for emerging infections is crucial,” they said.
 

Zika vaccine research is a challenge worth pursuing

“It is important to continue Zika vaccine research because of the unpredictable nature of that infection,” Kevin Ault, MD, of the University of Kansas, Kansas City, said in an interview. “Several times Zika has gained a foothold in unexposed and vulnerable populations,” Dr. Ault said.  “Additionally, there are some data about using this vector during pregnancy, and eventually this vaccine may prevent the birth defects associated with Zika infections during pregnancy, he noted.

Dr. Ault said he was not surprised by the study findings. “This is a promising early phase vaccine candidate, and this adenovirus vector has been used in other similar trials,” he said. Potential barriers to vaccine development include the challenge of conducting late phase clinical trials in pregnant women, he noted. “The relevant endpoint is going to be clinical disease, and one of the most critical populations is pregnant women,” he said. In addition, “later phase 3 trials would be conducted in a population where there is an ongoing Zika outbreak,” Dr. Ault emphasized.   

The study was supported by Janssen Vaccines and Infectious Diseases.

Dr. Chahroudi had no financial conflicts to disclose. Dr. Permar disclosed grants from Merck and Moderna unrelated to the current study. Dr. Ault had no relevant financial conflicts to disclose; he has served as an adviser to the Centers for Disease Control and Prevention, the World Medical Association, the National Vaccine Program Office, and the National Institute for Allergy and Infectious Diseases. He is a fellow of the Infectious Disease Society of American and a fellow of ACOG. 

A Zika virus vaccine candidate prompted antibody responses in 80% of individuals who received two doses in a phase 1 study.

©Aunt_Spray/Thinkstock

Although Zika cases have declined in recent years, “geographic expansion of the Aedes aegypti mosquito to areas where population-level immunity is low poses a substantial risk for future epidemics,” wrote Nadine C. Salisch, PhD, of Janssen Vaccines and Prevention, Leiden, the Netherlands, and colleagues in a paper published in Annals of Internal Medicine.

No vaccine against Zika is yet available, although more than 10 candidates have been studied in preclinical trials to date, they said.

The researchers randomized 100 healthy adult volunteers to an experimental Zika vaccine candidate known as Ad26.ZIKV.001 in either one-dose or two-dose regimens of 5x10¹⁰ viral particles (low dose) or 1x10¹¹ viral particles (high dose) or placebo. Approximately half (55%) of the participants were women, and 72% were White.

Approximately 80% of patients in both two-dose groups showed antibody responses for a year after vaccination. Geometric mean titers (GMTs) reached peak of 823.4 in the low-dose/low-dose group and 961.5 in the high-dose/high-dose group. At day 365, the GMTs for these groups were 68.7 and 87.0, respectively.

A single high-dose vaccine achieved a similar level of neutralizing antibody titers, but lower peak neutralizing responses than the two-dose strategies, the researchers noted.

Most of the reported adverse events were mild to moderate, and short lived; the most common were injection site pain or tenderness, headache, and fatigue, the researchers said. After the first vaccination, 75% of participants in the low-dose groups, 88% of participants in high-dose groups, and 45% of participants receiving placebo reported local adverse events. In addition, 73%, 83%, and 40% of the participants in the low-dose, high-dose, and placebo groups, respectively, reported systemic adverse events. Reports were similar after the second vaccination. Two serious adverse events not related to vaccination were reported; one case of right lower lobe pneumonia and one case of incomplete spontaneous abortion.

The researchers also explored protective efficacy through a nonlethal mouse challenge model. “Transfer of 6 mg of IgG from Ad26.ZIKV.001 vaccines conferred complete protection from viremia in most recipient animals, with statistically significantly decreased breakthrough rates and cumulative viral loads per group compared with placebo,” they said.

The study findings were limited by the inability to assess safety and immunogenicity in an endemic area, the researchers noted. However, “Ad26.ZIKV.001 induces potent ZIKV-specific neutralizing responses with durability of at least 1 year, which supports further clinical development if an unmet medical need reemerges,” they said. “In addition, these data underscore the performance of the Ad26 vaccine platform, which Janssen is using for different infectious diseases, including COVID-19,” they noted.
 

Ad26 vector platform shows consistency

“Development of the investigational Janssen Zika vaccine candidate was initiated in 2015, and while the incidence of Zika virus has declined since the 2015-2016 outbreak, spread of the ‘carrier’ Aedes aegypti mosquito to areas where population-level immunity is low poses a substantial risk for future epidemics,” lead author Dr. Salisch said in an interview. For this reason, researchers say the vaccine warrants further development should the need reemerge, she said.

“Our research has found that while a single higher-dose regimen had lower peak neutralizing responses than a two-dose regimen, it achieved a similar level of neutralizing antibody responses at 1 year, an encouraging finding that shows our vaccine may be a useful tool to curb Zika epidemics,” Dr. Salisch noted. “Previous experience with the Ad26 vector platform across our investigational vaccine programs have yielded similarly promising results, most recently with our investigational Janssen COVID-19 vaccine program, for which phase 3 data show a single-dose vaccine met all primary and key secondary endpoints,” she said.

“The biggest barrier [to further development of the candidate vaccine] is one that we actually consider ourselves fortunate to have: The very low incidence of reported Zika cases currently reported worldwide,” Dr. Salisch said. “However, the current Zika case rate can change at any time, and in the event the situation demands it, we are open to alternative regulatory pathways to help us glean the necessary insights on vaccine safety and efficacy to further advance the development of this candidate,” she emphasized.

As for additional research, “there are still questions surrounding Zika transmission and the pathomechanism of congenital Zika syndrome,” said Dr. Salisch. “Our hope is that a correlate of protection against Zika disease, and in particular against congenital Zika syndrome, can be identified,” she said.  

Consider pregnant women in next phase of research

“A major hurdle in ZIKV vaccine development is the inability to conduct large efficacy studies in the absence of a current outbreak,” Ann Chahroudi, MD, of Emory University, Atlanta, and Sallie Permar, MD, of Weill Cornell Medicine, New York, wrote in an accompanying editorial.

The current study provided some efficacy data using a mouse model, but “these data are obviously not conclusive for human protection,” they said.

“A further challenge for ZIKV vaccine efficacy trials will be to demonstrate fetal protection from [congenital Zika syndrome] after adult immunization. There should be a clear plan to readily deploy phase 3 trials for the most promising vaccines to emerge from phase 1 and 2 in the event of an outbreak, as was implemented for Ebola, including infant follow-up,” they emphasized.

The editorialists noted that the study did not include pregnant women, who represent a major target for immunization, but they said that vaccination of pregnant women against other neonatal pathogens such as influenza and tetanus has been effective. “Candidate ZIKV vaccines proven safe in phase 1 trials should immediately be assessed for safety and efficacy in pregnant women,” they said. Although Zika infections are not at epidemic levels currently, resurgence remains a possibility and the coronavirus pandemic “has taught us that preparedness for emerging infections is crucial,” they said.
 

Zika vaccine research is a challenge worth pursuing

“It is important to continue Zika vaccine research because of the unpredictable nature of that infection,” Kevin Ault, MD, of the University of Kansas, Kansas City, said in an interview. “Several times Zika has gained a foothold in unexposed and vulnerable populations,” Dr. Ault said.  “Additionally, there are some data about using this vector during pregnancy, and eventually this vaccine may prevent the birth defects associated with Zika infections during pregnancy, he noted.

Dr. Ault said he was not surprised by the study findings. “This is a promising early phase vaccine candidate, and this adenovirus vector has been used in other similar trials,” he said. Potential barriers to vaccine development include the challenge of conducting late phase clinical trials in pregnant women, he noted. “The relevant endpoint is going to be clinical disease, and one of the most critical populations is pregnant women,” he said. In addition, “later phase 3 trials would be conducted in a population where there is an ongoing Zika outbreak,” Dr. Ault emphasized.   

The study was supported by Janssen Vaccines and Infectious Diseases.

Dr. Chahroudi had no financial conflicts to disclose. Dr. Permar disclosed grants from Merck and Moderna unrelated to the current study. Dr. Ault had no relevant financial conflicts to disclose; he has served as an adviser to the Centers for Disease Control and Prevention, the World Medical Association, the National Vaccine Program Office, and the National Institute for Allergy and Infectious Diseases. He is a fellow of the Infectious Disease Society of American and a fellow of ACOG. 

Combination antiretroviral therapy (cART) has shifted HIV infection from a fatal to a chronic condition. New evidence now suggests this has been accompanied by a shift in the profile of HIV-related brain abnormalities beyond the basal ganglia, frequently implicated in the pre-cART era, to limbic structures.

“This shift in subcortical signatures may be contributing to the increasing range of neuropsychiatric and cognitive outcomes,” write Neda Jahanshad, PhD, University of Southern California, Los Angeles, and colleagues.

The study was published online Jan. 15 in JAMA Network Open.
 

Brain signature of HIV

The researchers with the HIV Working Group within the Enhancing Neuro Imaging Genetics Through Meta Analysis (ENIGMA) consortium examined structural brain associations with CD4+ T cell counts and HIV viral load.

These clinical markers are the most consistently available in studies of HIV and generalize across demographically and clinically diverse HIV-infected individuals, they point out. However, the degree to which they capture central nervous system injury is not fully understood.

In this cross-sectional study of 1,203 HIV-infected adults from 13 HIV neuroimaging studies, a lower CD4+ T-cell count was associated with smaller hippocampal and thalamic volume independent of treatment status. However, in a subset of adults not on cART, a lower CD4+ T-cell count was associated with smaller putamen volume.

Across all participants, detectable viral load was associated with smaller hippocampal volume, but in the subset on cART, detectable viral load was also associated with smaller amygdala volume.

The findings indicate that plasma markers universally used to monitor immune function and response to treatment in patients with HIV infection are associated with subcortical brain volume.

“Our findings,” they add, “extend beyond the classically implicated regions of the basal ganglia and may represent a generalizable brain signature of HIV infection in the cART era.”

A limitation of the analysis is that most of the participants were men (n = 880, 73%). “A more extensive international effort assessing the neurologic effects of HIV infection in women is needed,” they conclude.

This analysis, they add, demonstrates the feasibility and utility of a global collaborative initiative to understand the neurologic signatures of HIV infection. They invite other HIV researchers to join the ENIGMA-HIV consortium.

“With a greater collaborative effort, we will be able to assess factors that may modulate neurologic outcomes, including cART treatment regimens, comorbidities, coinfections, substance use, socioeconomic factors, and demographic factors, as well as the functional implications of such structural brain differences, in well-powered analyses,” the researchers say.

“Understanding the neurobiological changes that may contribute to neuropsychiatric and cognitive outcomes in HIV-positive individuals is critical for identifying individuals at risk for neurologic symptoms, driving novel treatments that may protect the CNS, and monitoring treatment response,” they add.

Support for this research was provided by grants from the National Institutes of Health, the SA Medical Research Council, the National Health and Medical Research Council, and the European Research Council. Dr. Jahanshad received partial research support from Biogen for work unrelated to the topic of this article. A complete list of author disclosures is in the original article.

A version of this article first appeared on Medscape.com.

Combination antiretroviral therapy (cART) has shifted HIV infection from a fatal to a chronic condition. New evidence now suggests this has been accompanied by a shift in the profile of HIV-related brain abnormalities beyond the basal ganglia, frequently implicated in the pre-cART era, to limbic structures.

“This shift in subcortical signatures may be contributing to the increasing range of neuropsychiatric and cognitive outcomes,” write Neda Jahanshad, PhD, University of Southern California, Los Angeles, and colleagues.

The study was published online Jan. 15 in JAMA Network Open.
 

Brain signature of HIV

The researchers with the HIV Working Group within the Enhancing Neuro Imaging Genetics Through Meta Analysis (ENIGMA) consortium examined structural brain associations with CD4+ T cell counts and HIV viral load.

These clinical markers are the most consistently available in studies of HIV and generalize across demographically and clinically diverse HIV-infected individuals, they point out. However, the degree to which they capture central nervous system injury is not fully understood.

In this cross-sectional study of 1,203 HIV-infected adults from 13 HIV neuroimaging studies, a lower CD4+ T-cell count was associated with smaller hippocampal and thalamic volume independent of treatment status. However, in a subset of adults not on cART, a lower CD4+ T-cell count was associated with smaller putamen volume.

Across all participants, detectable viral load was associated with smaller hippocampal volume, but in the subset on cART, detectable viral load was also associated with smaller amygdala volume.

The findings indicate that plasma markers universally used to monitor immune function and response to treatment in patients with HIV infection are associated with subcortical brain volume.

“Our findings,” they add, “extend beyond the classically implicated regions of the basal ganglia and may represent a generalizable brain signature of HIV infection in the cART era.”

A limitation of the analysis is that most of the participants were men (n = 880, 73%). “A more extensive international effort assessing the neurologic effects of HIV infection in women is needed,” they conclude.

This analysis, they add, demonstrates the feasibility and utility of a global collaborative initiative to understand the neurologic signatures of HIV infection. They invite other HIV researchers to join the ENIGMA-HIV consortium.

“With a greater collaborative effort, we will be able to assess factors that may modulate neurologic outcomes, including cART treatment regimens, comorbidities, coinfections, substance use, socioeconomic factors, and demographic factors, as well as the functional implications of such structural brain differences, in well-powered analyses,” the researchers say.

“Understanding the neurobiological changes that may contribute to neuropsychiatric and cognitive outcomes in HIV-positive individuals is critical for identifying individuals at risk for neurologic symptoms, driving novel treatments that may protect the CNS, and monitoring treatment response,” they add.

Support for this research was provided by grants from the National Institutes of Health, the SA Medical Research Council, the National Health and Medical Research Council, and the European Research Council. Dr. Jahanshad received partial research support from Biogen for work unrelated to the topic of this article. A complete list of author disclosures is in the original article.

A version of this article first appeared on Medscape.com.

Combination antiretroviral therapy (cART) has shifted HIV infection from a fatal to a chronic condition. New evidence now suggests this has been accompanied by a shift in the profile of HIV-related brain abnormalities beyond the basal ganglia, frequently implicated in the pre-cART era, to limbic structures.

“This shift in subcortical signatures may be contributing to the increasing range of neuropsychiatric and cognitive outcomes,” write Neda Jahanshad, PhD, University of Southern California, Los Angeles, and colleagues.

The study was published online Jan. 15 in JAMA Network Open.
 

Brain signature of HIV

The researchers with the HIV Working Group within the Enhancing Neuro Imaging Genetics Through Meta Analysis (ENIGMA) consortium examined structural brain associations with CD4+ T cell counts and HIV viral load.

These clinical markers are the most consistently available in studies of HIV and generalize across demographically and clinically diverse HIV-infected individuals, they point out. However, the degree to which they capture central nervous system injury is not fully understood.

In this cross-sectional study of 1,203 HIV-infected adults from 13 HIV neuroimaging studies, a lower CD4+ T-cell count was associated with smaller hippocampal and thalamic volume independent of treatment status. However, in a subset of adults not on cART, a lower CD4+ T-cell count was associated with smaller putamen volume.

Across all participants, detectable viral load was associated with smaller hippocampal volume, but in the subset on cART, detectable viral load was also associated with smaller amygdala volume.

The findings indicate that plasma markers universally used to monitor immune function and response to treatment in patients with HIV infection are associated with subcortical brain volume.

“Our findings,” they add, “extend beyond the classically implicated regions of the basal ganglia and may represent a generalizable brain signature of HIV infection in the cART era.”

A limitation of the analysis is that most of the participants were men (n = 880, 73%). “A more extensive international effort assessing the neurologic effects of HIV infection in women is needed,” they conclude.

This analysis, they add, demonstrates the feasibility and utility of a global collaborative initiative to understand the neurologic signatures of HIV infection. They invite other HIV researchers to join the ENIGMA-HIV consortium.

“With a greater collaborative effort, we will be able to assess factors that may modulate neurologic outcomes, including cART treatment regimens, comorbidities, coinfections, substance use, socioeconomic factors, and demographic factors, as well as the functional implications of such structural brain differences, in well-powered analyses,” the researchers say.

“Understanding the neurobiological changes that may contribute to neuropsychiatric and cognitive outcomes in HIV-positive individuals is critical for identifying individuals at risk for neurologic symptoms, driving novel treatments that may protect the CNS, and monitoring treatment response,” they add.

Support for this research was provided by grants from the National Institutes of Health, the SA Medical Research Council, the National Health and Medical Research Council, and the European Research Council. Dr. Jahanshad received partial research support from Biogen for work unrelated to the topic of this article. A complete list of author disclosures is in the original article.

A version of this article first appeared on Medscape.com.