Practice Alert

In August 2020, the US Preventive Services Task Force published an update of its recommendation on preventing sexually transmitted infections (STIs) with behavioral counseling interventions.¹

Whom to counsel. The USPSTF continues to recommend behavioral counseling for all sexually active adolescents and for adults at increased risk for STIs. Adults at increased risk include those who have been diagnosed with an STI in the past year, those with multiple sex partners or a sex partner at high risk for an STI, those not using condoms consistently, and those belonging to populations with high prevalence rates of STIs. These populations with high prevalence rates include¹

• individuals seeking care at STI clinics,
• sexual and gender minorities, and
• those who are positive for human immunodeficiency virus (HIV), use injection drugs, exchange sex for drugs or money, or have recently been in a correctional facility.

Features of effective counseling. The Task Force recommends that primary care clinicians provide behavioral counseling or refer to counseling services or suggest media-based interventions. The most effective counseling interventions are those that span more than 120 minutes over several sessions. But the Task Force also states that counseling lasting about 30 minutes in a single session can also be effective. Counseling should include information about common STIs and their modes of transmission; encouragement in the use of safer sex practices; and training in proper condom use, how to communicate with partners about safer sex practices, and problem-­solving. Various approaches to this counseling can be found at https://uspreventiveservicestaskforce.org/uspstf/recommendation/sexually-­transmitted-infections-behavioral-counseling.

This updated recommendation is timely because most STIs in the United States have been increasing in incidence for the past decade or longer.² Per 100,000 population, the total number of chlamydia cases since 2000 has risen from 251.4 to 539.9 (115%);gonorrhea cases since 2009 have risen from 98.1 to 179.1 (83%).³ And since 2000, the total number of reported syphilis cases per 100,000 has risen from 2.1 to 10.8 (414%).³

Chlamydia affects primarily those ages 15 to 24 years, with highest rates occurring in females (FIGURE 1).² Gonorrhea affects women and men fairly evenly with slightly higher rates in men; the highest rates are seen in those ages 20 to 29 (FIGURE 2).² Syphilis predominantly affects men who have sex with men, and the highest rates are in those ages 20 to 34 (FIGURE 3).² In contrast to these upward trends, the number of HIV cases diagnosed has been relatively steady, with a slight downward trend over the past decade.⁴Other STIs that can be prevented through behavioral counseling include herpes simplex, human papillomavirus (HPV), hepatitis B virus (HBV) and trichomonas vaginalis.

Continue to: How to integrate STI preventioninto the primary care encounter

How to integrate STI preventioninto the primary care encounter

A key resource for learning to recognize the signs and symptoms of STIs, to correctly diagnose them, and to treat them according to CDC guidelines can be found at www.cdc.gov/std/tg2015/default.htm.⁵ Equally important is to integrate the prevention of STIs into the clinical routine by using a 4-step approach: risk assessment, risk reduction (counseling and chemoprevention), screening, and vaccination.

Risk assessment. The first step in prevention is taking a sexual history to accurately assess a patient’s risk for STIs. The CDC provides a tool (www.cdc.gov/std/products/provider-pocket-guides.htm) that can assist in gathering information in a nonjudgmental fashion about 5 Ps: partners, practices, protection from STIs, past history of STIs, and prevention of pregnancy.

Risk reduction. Following STI risk assessment, recommend risk-reduction interventions, as appropriate. Notable in the new Task Force recommendation are behavioral counseling methods that work. Additionally, when needed, pre-exposure prophylaxis with effective antiretroviral agents can be offered to those at high risk of HIV.⁶

Screening. Task Force recommendations for STI screening are described in the TABLE.^7-12 Screening for HIV, chlamydia, gonorrhea, syphilis, and HBV are also recommended for pregnant women. And, although pregnant women are not specifically mentioned in the recommendation on chlamydia screening, it is reasonable to include it in prenatal care testing for STIs.

Continue to: Although hepatitis C virus...

Although hepatitis C virus (HCV) is transmitted mainly through intravenous drug use, it can also be transmitted sexually. The Task Force recommends screening for HCV in all adults ages 18 to 79 years.¹³

Vaccination. Two STIs can be prevented by immunizations: HPV and HBV. The current recommendations by the Advisory Committee on Immunization Practices (ACIP) are to vaccinate all infants with HBV vaccine and all unvaccinated children and adolescents through age 18.¹⁴ Unvaccinated adults who are at risk for HBV infection, including those at risk through sexual practices, should also be vaccinated.¹⁴

ACIP recommends routine HPV vaccination at age 11 or 12 years, but it can be started as early as 9 years.¹⁵ Catch-up vaccination is recommended for males and females through age 26 years.¹⁵ The vaccine is approved for use in individuals ages 27 through 45 years, but ACIP has not recommended it for routine use in this age group, and has instead recommended shared clinical decision-making to evaluate whether there is potential individual benefit from the vaccine.¹⁵

Public health implications

All STIs are reportable to local or state health departments. This is important for tracking community infection trends and, if resources are available, for contact notification and testing. In most jurisdictions, local health department resources are limited and contact tracing may be restricted to syphilis and HIV infections. When this is the case, it is especially important to instruct patients in whom STIs have been detected to notify their recent sex partners and advise them to be tested or preventively treated.

Recurring counseling is preferrable, but a single session lasting about 30 minutes can also be effective.

Expedited partner therapy (EPT)—providing treatment for exposed sexual contacts without a clinical encounter—is allowed in some states and is a tool that can prevent re-infection in the treated patient and suppress spread in the community. This is most useful for partners of those with gonorrhea, chlamydia, or trichomonas. The CDC has published guidance on how to implement EPT in a clinical setting if state law allows it.¹⁶

In August 2020, the US Preventive Services Task Force published an update of its recommendation on preventing sexually transmitted infections (STIs) with behavioral counseling interventions.¹

Whom to counsel. The USPSTF continues to recommend behavioral counseling for all sexually active adolescents and for adults at increased risk for STIs. Adults at increased risk include those who have been diagnosed with an STI in the past year, those with multiple sex partners or a sex partner at high risk for an STI, those not using condoms consistently, and those belonging to populations with high prevalence rates of STIs. These populations with high prevalence rates include¹

• individuals seeking care at STI clinics,
• sexual and gender minorities, and
• those who are positive for human immunodeficiency virus (HIV), use injection drugs, exchange sex for drugs or money, or have recently been in a correctional facility.

Features of effective counseling. The Task Force recommends that primary care clinicians provide behavioral counseling or refer to counseling services or suggest media-based interventions. The most effective counseling interventions are those that span more than 120 minutes over several sessions. But the Task Force also states that counseling lasting about 30 minutes in a single session can also be effective. Counseling should include information about common STIs and their modes of transmission; encouragement in the use of safer sex practices; and training in proper condom use, how to communicate with partners about safer sex practices, and problem-­solving. Various approaches to this counseling can be found at https://uspreventiveservicestaskforce.org/uspstf/recommendation/sexually-­transmitted-infections-behavioral-counseling.

This updated recommendation is timely because most STIs in the United States have been increasing in incidence for the past decade or longer.² Per 100,000 population, the total number of chlamydia cases since 2000 has risen from 251.4 to 539.9 (115%);gonorrhea cases since 2009 have risen from 98.1 to 179.1 (83%).³ And since 2000, the total number of reported syphilis cases per 100,000 has risen from 2.1 to 10.8 (414%).³

Chlamydia affects primarily those ages 15 to 24 years, with highest rates occurring in females (FIGURE 1).² Gonorrhea affects women and men fairly evenly with slightly higher rates in men; the highest rates are seen in those ages 20 to 29 (FIGURE 2).² Syphilis predominantly affects men who have sex with men, and the highest rates are in those ages 20 to 34 (FIGURE 3).² In contrast to these upward trends, the number of HIV cases diagnosed has been relatively steady, with a slight downward trend over the past decade.⁴Other STIs that can be prevented through behavioral counseling include herpes simplex, human papillomavirus (HPV), hepatitis B virus (HBV) and trichomonas vaginalis.

Continue to: How to integrate STI preventioninto the primary care encounter

How to integrate STI preventioninto the primary care encounter

A key resource for learning to recognize the signs and symptoms of STIs, to correctly diagnose them, and to treat them according to CDC guidelines can be found at www.cdc.gov/std/tg2015/default.htm.⁵ Equally important is to integrate the prevention of STIs into the clinical routine by using a 4-step approach: risk assessment, risk reduction (counseling and chemoprevention), screening, and vaccination.

Risk assessment. The first step in prevention is taking a sexual history to accurately assess a patient’s risk for STIs. The CDC provides a tool (www.cdc.gov/std/products/provider-pocket-guides.htm) that can assist in gathering information in a nonjudgmental fashion about 5 Ps: partners, practices, protection from STIs, past history of STIs, and prevention of pregnancy.

Risk reduction. Following STI risk assessment, recommend risk-reduction interventions, as appropriate. Notable in the new Task Force recommendation are behavioral counseling methods that work. Additionally, when needed, pre-exposure prophylaxis with effective antiretroviral agents can be offered to those at high risk of HIV.⁶

Screening. Task Force recommendations for STI screening are described in the TABLE.^7-12 Screening for HIV, chlamydia, gonorrhea, syphilis, and HBV are also recommended for pregnant women. And, although pregnant women are not specifically mentioned in the recommendation on chlamydia screening, it is reasonable to include it in prenatal care testing for STIs.

Continue to: Although hepatitis C virus...

Although hepatitis C virus (HCV) is transmitted mainly through intravenous drug use, it can also be transmitted sexually. The Task Force recommends screening for HCV in all adults ages 18 to 79 years.¹³

Vaccination. Two STIs can be prevented by immunizations: HPV and HBV. The current recommendations by the Advisory Committee on Immunization Practices (ACIP) are to vaccinate all infants with HBV vaccine and all unvaccinated children and adolescents through age 18.¹⁴ Unvaccinated adults who are at risk for HBV infection, including those at risk through sexual practices, should also be vaccinated.¹⁴

ACIP recommends routine HPV vaccination at age 11 or 12 years, but it can be started as early as 9 years.¹⁵ Catch-up vaccination is recommended for males and females through age 26 years.¹⁵ The vaccine is approved for use in individuals ages 27 through 45 years, but ACIP has not recommended it for routine use in this age group, and has instead recommended shared clinical decision-making to evaluate whether there is potential individual benefit from the vaccine.¹⁵

Public health implications

All STIs are reportable to local or state health departments. This is important for tracking community infection trends and, if resources are available, for contact notification and testing. In most jurisdictions, local health department resources are limited and contact tracing may be restricted to syphilis and HIV infections. When this is the case, it is especially important to instruct patients in whom STIs have been detected to notify their recent sex partners and advise them to be tested or preventively treated.

Recurring counseling is preferrable, but a single session lasting about 30 minutes can also be effective.

Expedited partner therapy (EPT)—providing treatment for exposed sexual contacts without a clinical encounter—is allowed in some states and is a tool that can prevent re-infection in the treated patient and suppress spread in the community. This is most useful for partners of those with gonorrhea, chlamydia, or trichomonas. The CDC has published guidance on how to implement EPT in a clinical setting if state law allows it.¹⁶

In August 2020, the US Preventive Services Task Force published an update of its recommendation on preventing sexually transmitted infections (STIs) with behavioral counseling interventions.¹

Whom to counsel. The USPSTF continues to recommend behavioral counseling for all sexually active adolescents and for adults at increased risk for STIs. Adults at increased risk include those who have been diagnosed with an STI in the past year, those with multiple sex partners or a sex partner at high risk for an STI, those not using condoms consistently, and those belonging to populations with high prevalence rates of STIs. These populations with high prevalence rates include¹

• individuals seeking care at STI clinics,
• sexual and gender minorities, and
• those who are positive for human immunodeficiency virus (HIV), use injection drugs, exchange sex for drugs or money, or have recently been in a correctional facility.

Features of effective counseling. The Task Force recommends that primary care clinicians provide behavioral counseling or refer to counseling services or suggest media-based interventions. The most effective counseling interventions are those that span more than 120 minutes over several sessions. But the Task Force also states that counseling lasting about 30 minutes in a single session can also be effective. Counseling should include information about common STIs and their modes of transmission; encouragement in the use of safer sex practices; and training in proper condom use, how to communicate with partners about safer sex practices, and problem-­solving. Various approaches to this counseling can be found at https://uspreventiveservicestaskforce.org/uspstf/recommendation/sexually-­transmitted-infections-behavioral-counseling.

This updated recommendation is timely because most STIs in the United States have been increasing in incidence for the past decade or longer.² Per 100,000 population, the total number of chlamydia cases since 2000 has risen from 251.4 to 539.9 (115%);gonorrhea cases since 2009 have risen from 98.1 to 179.1 (83%).³ And since 2000, the total number of reported syphilis cases per 100,000 has risen from 2.1 to 10.8 (414%).³

Chlamydia affects primarily those ages 15 to 24 years, with highest rates occurring in females (FIGURE 1).² Gonorrhea affects women and men fairly evenly with slightly higher rates in men; the highest rates are seen in those ages 20 to 29 (FIGURE 2).² Syphilis predominantly affects men who have sex with men, and the highest rates are in those ages 20 to 34 (FIGURE 3).² In contrast to these upward trends, the number of HIV cases diagnosed has been relatively steady, with a slight downward trend over the past decade.⁴Other STIs that can be prevented through behavioral counseling include herpes simplex, human papillomavirus (HPV), hepatitis B virus (HBV) and trichomonas vaginalis.

Continue to: How to integrate STI preventioninto the primary care encounter

How to integrate STI preventioninto the primary care encounter

A key resource for learning to recognize the signs and symptoms of STIs, to correctly diagnose them, and to treat them according to CDC guidelines can be found at www.cdc.gov/std/tg2015/default.htm.⁵ Equally important is to integrate the prevention of STIs into the clinical routine by using a 4-step approach: risk assessment, risk reduction (counseling and chemoprevention), screening, and vaccination.

Risk assessment. The first step in prevention is taking a sexual history to accurately assess a patient’s risk for STIs. The CDC provides a tool (www.cdc.gov/std/products/provider-pocket-guides.htm) that can assist in gathering information in a nonjudgmental fashion about 5 Ps: partners, practices, protection from STIs, past history of STIs, and prevention of pregnancy.

Risk reduction. Following STI risk assessment, recommend risk-reduction interventions, as appropriate. Notable in the new Task Force recommendation are behavioral counseling methods that work. Additionally, when needed, pre-exposure prophylaxis with effective antiretroviral agents can be offered to those at high risk of HIV.⁶

Screening. Task Force recommendations for STI screening are described in the TABLE.^7-12 Screening for HIV, chlamydia, gonorrhea, syphilis, and HBV are also recommended for pregnant women. And, although pregnant women are not specifically mentioned in the recommendation on chlamydia screening, it is reasonable to include it in prenatal care testing for STIs.

Continue to: Although hepatitis C virus...

Although hepatitis C virus (HCV) is transmitted mainly through intravenous drug use, it can also be transmitted sexually. The Task Force recommends screening for HCV in all adults ages 18 to 79 years.¹³

Vaccination. Two STIs can be prevented by immunizations: HPV and HBV. The current recommendations by the Advisory Committee on Immunization Practices (ACIP) are to vaccinate all infants with HBV vaccine and all unvaccinated children and adolescents through age 18.¹⁴ Unvaccinated adults who are at risk for HBV infection, including those at risk through sexual practices, should also be vaccinated.¹⁴

ACIP recommends routine HPV vaccination at age 11 or 12 years, but it can be started as early as 9 years.¹⁵ Catch-up vaccination is recommended for males and females through age 26 years.¹⁵ The vaccine is approved for use in individuals ages 27 through 45 years, but ACIP has not recommended it for routine use in this age group, and has instead recommended shared clinical decision-making to evaluate whether there is potential individual benefit from the vaccine.¹⁵

Public health implications

All STIs are reportable to local or state health departments. This is important for tracking community infection trends and, if resources are available, for contact notification and testing. In most jurisdictions, local health department resources are limited and contact tracing may be restricted to syphilis and HIV infections. When this is the case, it is especially important to instruct patients in whom STIs have been detected to notify their recent sex partners and advise them to be tested or preventively treated.

Recurring counseling is preferrable, but a single session lasting about 30 minutes can also be effective.

Expedited partner therapy (EPT)—providing treatment for exposed sexual contacts without a clinical encounter—is allowed in some states and is a tool that can prevent re-infection in the treated patient and suppress spread in the community. This is most useful for partners of those with gonorrhea, chlamydia, or trichomonas. The CDC has published guidance on how to implement EPT in a clinical setting if state law allows it.¹⁶

The 2020-2021 influenza season is shaping up to be challenging. Its likely concurrence with the ongoing severe acute respiratory syndrome-coronavirus 2 (­SARS-coV-2) pandemic (COVID-19) will pose diagnostic and therapeutic dilemmas and could overload the hospital system. But there could also be potential synergies in preventing morbidity and mortality from each disease.

A consistent pattern overthe past few influenza seasons

During the 2019-2020 flu season, there were an estimated 410,000 to 740,000 hospitalizations and 24,000 to 62,000 deaths attributed to influenza.¹ As seen in FIGURE 1, office visits for influenza-like illness (ILI) began to increase in late November and early December in each of the last 3 years (2017-2018, 2018-2019, ­2019-2020) and stayed elevated above baseline for about 4 months each season.¹

The effectiveness of influenza vaccine during the 2019-2020 season is being estimated using the US Flu Vaccine Effectiveness Network, which has close to 9000 enrollees. Overall, it appears the vaccine was 39% effective against medically attended influenza, with a higher effectiveness against influenza B (44%) than against A/H1N1 (31%). Effectiveness against influenza B was similar in all age groups, but effectiveness against A/H1N1 was highest for those ages 50 to 64 years (45%) and lowest for those ages 6 months through 8 years (22%), although 95% confidence intervals overlapped for all age groups (FIGURE 2). These preliminary effectiveness rates were presented at the summer meeting of the Advisory Committee on Immunization Practices (ACIP).¹

Influenza vaccine safety data for ­2019-2020 were based on the Vaccine Adverse Event Reporting System (VAERS), a passive surveillance system, and on the Vaccine Safety Datalink (VSD) system, an active surveillance system involving close to 6 million doses administered at VSD sites. No safety concerns were identified for any of the different vaccine types. Both the VAERS and VSD surveillance systems have been described in more detail in a previous Practice Alert.²

Recommendations for 2020-2021

The composition of the influenza vaccines for this year’s flu season will be different for 3 of the 4 antigens: A/H1N1, A/H2N2 and B/Victoria.³ The antigens included in the influenza vaccines each year are decided on in the spring, based on surveillance of circulating strains around the world. The effectiveness of the vaccine each year largely depends on how well the strains included in the vaccine match those circulating in the United States during the influenza season.

The main immunization recommendation for preventing morbidity and mortality from influenza has not changed: All individuals ages 6 months and older without a contraindication should receive an influenza vaccine.⁴ The Centers for Disease Control and Prevention (CDC) recommends that patients receive the vaccine by the end of October.⁴ This includes the second dose for those children younger than 9 years who need 2 doses—ie, those who have received fewer than 2 doses of influenza vaccine prior to July 2020. Vaccination should continue through the end of the season for anyone who has not received a 2020-2021 influenza vaccine.

Two new influenza vaccine products are available for use in those ages 65 years and older: Fluzone high-dose quadrivalent and Fluad Quadrivalent (adjuvanted).⁴ Both of these products were available last year as trivalent options. Currently no specific vaccine product is listed as preferred by ACIP for those ages 65 and older.

Continue to: New vaccine contraindications

New vaccine contraindications. Four medical conditions have been added to the list of contraindications for quadrivalent live, attenuated influenza vaccine (LAIV4): cochlear implant, cerebrospinal fluid leak, asplenia (anatomic and functional), and sickle cell anemia.⁴ In addition, those who receive LAIV4 should not be prescribed an influenza antiviral until 2 weeks after receiving the vaccine. And the vaccine should not be administered for 48 hours after receipt of oseltamivir or zanamivir, 5 days after peramivir, and 17 days after baloxavir marboxil.⁴ This is to prevent possible antiviral inactivation of the live attenuated influenza viruses in the ­vaccine.

For those who have a history of severe allergic reaction to eggs, there are now 2 egg-free options: cell-culture-based inactivated vaccine (ccIIV4) and recombinant influenza vaccine (RIV4).^3,4 Urticaria alone is not considered a severe reaction. If neither of these egg-free options is available, a vaccine may still be administered in a medical setting supervised by a provider who is able to manage a severe allergic reaction (which rarely occurs).

All vaccine products available for the upcoming influenza season are listed and described on the CDC Web site, as is a summary of related recommendations.⁴ Particular attention should be paid to the dose of vaccine administered, as it differs by product for those ages 6 through 35 months of age and those ages 65 years and older.

Use of antiviral medications

Four antiviral medications are now available for treating influenza (3 neuraminidase inhibitors and 1 endonuclease inhibitor), and there are 2 agents for preventing influenza, both neuraminidase inhibitors (TABLE 1).⁵ The CDC recommends treating with antivirals as soon as possible if individuals with confirmed or suspected influenza require hospitalization; have severe, complicated, or progressive illness; or are at high risk for complications. Use antivirals based on clinical judgment if previously healthy individuals do not have severe complications and are not at increased risk for complications, and only if the medication can be started within 48 hours of symptom onset.

The CDC discourages widespread use of antivirals to prevent influenza, either pre- or postexposure, although it specifies certain situations in which usage would be acceptable (TABLE 2).⁵ There is some concern that widespread use could lead to the emergence of drug-resistant strains and that using postexposure dosing could lead to suboptimal treatment if influenza infection occurred before the start of prophylaxis. If postexposure antivirals are prescribed, they should be started within 48 hours of exposure and continued for 7 days after the last exposure.

Continue to: A potential perfect storm

While we have vaccines and antivirals to prevent influenza, and have effective antivirals for treatment, no prevention or treatment options exist for COVID-19, except, possibly, dexamethasone to reduce mortality among those seriously ill.⁶ The concurrence of influenza and COVID-19 will present unique challenges for the health care system.

Action steps. Keep abreast of the incidences of circulating SARS-coV-19 and influenza viruses in your community. The similar signs and symptoms of these 2 infectious agents will complicate diagnosis. Rapid, or point-of-care, tests for influenza are widely available, but their accuracy varies and not all tests detect both influenza A and B. The CDC lists approved point-of-care tests at www.cdc.gov/flu/professionals/diagnosis/table-ridt.html and advises on how to interpret these test results when influenza is and is not circulating in the community, at www.cdc.gov/flu/­professionals/diagnosis/clinician_­guidance_ridt.htm.

Clinical practice advice for both conditions should be implemented when any patient presents with ILI:⁷

• Most patients who are not seriously ill and have no conditions that place them at high risk for adverse outcomes can be treated symptomatically at home.
• Those with ILI should be tested for both influenza virus and SARS-CoV-2 if testing is available. It is possible to be co-infected.
• Sick patients should self-isolate at home for the duration of their symptoms.
• If others live in the house, the sick person should stay in a separate room and wear a mask. Everyone in the house should cover coughs and sneezes (if not wearing a mask), dispose of used tissues in a trash can (rather than leaving them on night stands and countertops), and wash hands frequently.
• All household members should be vaccinated against influenza. Those who are unvaccinated, and those at high risk who have been recently vaccinated, can consider influenza antiviral prophylaxis. If the sick family member is confirmed to have COVID-19, with no co-existing influenza, anti-influenza antiviral prophylaxis may be discontinued.
• Clinical infection control practices should be the same for anyone presenting with ILI.⁷ Enhanced clinic-based infection control practices to prevent spread of SARS-CoV-2 are listed in TABLE 3.⁸

Since there currently are no preventive medications proven to work for COVID-19, the main clinical decision physicians will have to make when a patient presents with ILI is whether to use antivirals to treat those who are at risk for complications based on the result of rapid, on-site influenza testing, or clinical presentation, or both. In this situation, knowledge of which viruses are circulating at high rates in the community could be valuable.

Milder season or perfect storm? The society-wide interventions that have been encouraged (although not mandated everywhere) to prevent community spread of ­SARS-CoV-2 should help prevent the community spread of influenza as well, and, if adhered to, may lead to a milder influenza season than would otherwise have occurred. However, given the uncertainties, the combination of influenza and coronavirus could present a perfect storm for the health care system and result in higher-than-normal morbidity and mortality from ILI and pneumonia overall.

Continue to: The possibility that one or more vaccines...

The possibility that one or more vaccines to prevent COVID-19 may be available in late 2020 or early 2021 offers hope. However, in current testing, the vaccine is not being given simultaneously with the influenza vaccine. If the potential for adverse interaction exists between the vaccines, it is important that influenza vaccine be given by mid- to late-October to avoid such an interaction if and when the new SARS-CoV-2 vaccine becomes available. Individuals who have symptoms of COVID-19 should not be vaccinated with influenza vaccine until they are considered noninfectious.

Encourage influenza vaccination. The COVID-19 pandemic may make it difficult to achieve desired community influenza vaccine levels because of decreased visits to medical facilities for preventive care, possible lower insurance coverage due to loss of employment, and a decrease in worksite mass vaccination programs. This makes it important for family physicians to encourage and offer influenza vaccines at their clinical sites.

Several evidence-based practices have been shown to improve vaccine uptake. Examples of such practices include patient reminder and recall systems that provide feedback to clinicians about rates of vaccination among patients, and establishing standing orders for vaccine administration that allow other health care providers to assess a patient’s immunization status and administer vaccinations according to a protocol.⁹ Finally, the CDC provides a video on how to recommend influenza vaccine to those who may be resistant (www.cdc.gov/vaccines/howirecommend/adult-vacc-videos.html).

The 2020-2021 influenza season is shaping up to be challenging. Its likely concurrence with the ongoing severe acute respiratory syndrome-coronavirus 2 (­SARS-coV-2) pandemic (COVID-19) will pose diagnostic and therapeutic dilemmas and could overload the hospital system. But there could also be potential synergies in preventing morbidity and mortality from each disease.

A consistent pattern overthe past few influenza seasons

During the 2019-2020 flu season, there were an estimated 410,000 to 740,000 hospitalizations and 24,000 to 62,000 deaths attributed to influenza.¹ As seen in FIGURE 1, office visits for influenza-like illness (ILI) began to increase in late November and early December in each of the last 3 years (2017-2018, 2018-2019, ­2019-2020) and stayed elevated above baseline for about 4 months each season.¹

The effectiveness of influenza vaccine during the 2019-2020 season is being estimated using the US Flu Vaccine Effectiveness Network, which has close to 9000 enrollees. Overall, it appears the vaccine was 39% effective against medically attended influenza, with a higher effectiveness against influenza B (44%) than against A/H1N1 (31%). Effectiveness against influenza B was similar in all age groups, but effectiveness against A/H1N1 was highest for those ages 50 to 64 years (45%) and lowest for those ages 6 months through 8 years (22%), although 95% confidence intervals overlapped for all age groups (FIGURE 2). These preliminary effectiveness rates were presented at the summer meeting of the Advisory Committee on Immunization Practices (ACIP).¹

Influenza vaccine safety data for ­2019-2020 were based on the Vaccine Adverse Event Reporting System (VAERS), a passive surveillance system, and on the Vaccine Safety Datalink (VSD) system, an active surveillance system involving close to 6 million doses administered at VSD sites. No safety concerns were identified for any of the different vaccine types. Both the VAERS and VSD surveillance systems have been described in more detail in a previous Practice Alert.²

Recommendations for 2020-2021

The composition of the influenza vaccines for this year’s flu season will be different for 3 of the 4 antigens: A/H1N1, A/H2N2 and B/Victoria.³ The antigens included in the influenza vaccines each year are decided on in the spring, based on surveillance of circulating strains around the world. The effectiveness of the vaccine each year largely depends on how well the strains included in the vaccine match those circulating in the United States during the influenza season.

The main immunization recommendation for preventing morbidity and mortality from influenza has not changed: All individuals ages 6 months and older without a contraindication should receive an influenza vaccine.⁴ The Centers for Disease Control and Prevention (CDC) recommends that patients receive the vaccine by the end of October.⁴ This includes the second dose for those children younger than 9 years who need 2 doses—ie, those who have received fewer than 2 doses of influenza vaccine prior to July 2020. Vaccination should continue through the end of the season for anyone who has not received a 2020-2021 influenza vaccine.

Two new influenza vaccine products are available for use in those ages 65 years and older: Fluzone high-dose quadrivalent and Fluad Quadrivalent (adjuvanted).⁴ Both of these products were available last year as trivalent options. Currently no specific vaccine product is listed as preferred by ACIP for those ages 65 and older.

Continue to: New vaccine contraindications

New vaccine contraindications. Four medical conditions have been added to the list of contraindications for quadrivalent live, attenuated influenza vaccine (LAIV4): cochlear implant, cerebrospinal fluid leak, asplenia (anatomic and functional), and sickle cell anemia.⁴ In addition, those who receive LAIV4 should not be prescribed an influenza antiviral until 2 weeks after receiving the vaccine. And the vaccine should not be administered for 48 hours after receipt of oseltamivir or zanamivir, 5 days after peramivir, and 17 days after baloxavir marboxil.⁴ This is to prevent possible antiviral inactivation of the live attenuated influenza viruses in the ­vaccine.

For those who have a history of severe allergic reaction to eggs, there are now 2 egg-free options: cell-culture-based inactivated vaccine (ccIIV4) and recombinant influenza vaccine (RIV4).^3,4 Urticaria alone is not considered a severe reaction. If neither of these egg-free options is available, a vaccine may still be administered in a medical setting supervised by a provider who is able to manage a severe allergic reaction (which rarely occurs).

All vaccine products available for the upcoming influenza season are listed and described on the CDC Web site, as is a summary of related recommendations.⁴ Particular attention should be paid to the dose of vaccine administered, as it differs by product for those ages 6 through 35 months of age and those ages 65 years and older.

Use of antiviral medications

Four antiviral medications are now available for treating influenza (3 neuraminidase inhibitors and 1 endonuclease inhibitor), and there are 2 agents for preventing influenza, both neuraminidase inhibitors (TABLE 1).⁵ The CDC recommends treating with antivirals as soon as possible if individuals with confirmed or suspected influenza require hospitalization; have severe, complicated, or progressive illness; or are at high risk for complications. Use antivirals based on clinical judgment if previously healthy individuals do not have severe complications and are not at increased risk for complications, and only if the medication can be started within 48 hours of symptom onset.

The CDC discourages widespread use of antivirals to prevent influenza, either pre- or postexposure, although it specifies certain situations in which usage would be acceptable (TABLE 2).⁵ There is some concern that widespread use could lead to the emergence of drug-resistant strains and that using postexposure dosing could lead to suboptimal treatment if influenza infection occurred before the start of prophylaxis. If postexposure antivirals are prescribed, they should be started within 48 hours of exposure and continued for 7 days after the last exposure.

Continue to: A potential perfect storm

While we have vaccines and antivirals to prevent influenza, and have effective antivirals for treatment, no prevention or treatment options exist for COVID-19, except, possibly, dexamethasone to reduce mortality among those seriously ill.⁶ The concurrence of influenza and COVID-19 will present unique challenges for the health care system.

Action steps. Keep abreast of the incidences of circulating SARS-coV-19 and influenza viruses in your community. The similar signs and symptoms of these 2 infectious agents will complicate diagnosis. Rapid, or point-of-care, tests for influenza are widely available, but their accuracy varies and not all tests detect both influenza A and B. The CDC lists approved point-of-care tests at www.cdc.gov/flu/professionals/diagnosis/table-ridt.html and advises on how to interpret these test results when influenza is and is not circulating in the community, at www.cdc.gov/flu/­professionals/diagnosis/clinician_­guidance_ridt.htm.

Clinical practice advice for both conditions should be implemented when any patient presents with ILI:⁷

• Most patients who are not seriously ill and have no conditions that place them at high risk for adverse outcomes can be treated symptomatically at home.
• Those with ILI should be tested for both influenza virus and SARS-CoV-2 if testing is available. It is possible to be co-infected.
• Sick patients should self-isolate at home for the duration of their symptoms.
• If others live in the house, the sick person should stay in a separate room and wear a mask. Everyone in the house should cover coughs and sneezes (if not wearing a mask), dispose of used tissues in a trash can (rather than leaving them on night stands and countertops), and wash hands frequently.
• All household members should be vaccinated against influenza. Those who are unvaccinated, and those at high risk who have been recently vaccinated, can consider influenza antiviral prophylaxis. If the sick family member is confirmed to have COVID-19, with no co-existing influenza, anti-influenza antiviral prophylaxis may be discontinued.
• Clinical infection control practices should be the same for anyone presenting with ILI.⁷ Enhanced clinic-based infection control practices to prevent spread of SARS-CoV-2 are listed in TABLE 3.⁸

Since there currently are no preventive medications proven to work for COVID-19, the main clinical decision physicians will have to make when a patient presents with ILI is whether to use antivirals to treat those who are at risk for complications based on the result of rapid, on-site influenza testing, or clinical presentation, or both. In this situation, knowledge of which viruses are circulating at high rates in the community could be valuable.

Milder season or perfect storm? The society-wide interventions that have been encouraged (although not mandated everywhere) to prevent community spread of ­SARS-CoV-2 should help prevent the community spread of influenza as well, and, if adhered to, may lead to a milder influenza season than would otherwise have occurred. However, given the uncertainties, the combination of influenza and coronavirus could present a perfect storm for the health care system and result in higher-than-normal morbidity and mortality from ILI and pneumonia overall.

Continue to: The possibility that one or more vaccines...

The possibility that one or more vaccines to prevent COVID-19 may be available in late 2020 or early 2021 offers hope. However, in current testing, the vaccine is not being given simultaneously with the influenza vaccine. If the potential for adverse interaction exists between the vaccines, it is important that influenza vaccine be given by mid- to late-October to avoid such an interaction if and when the new SARS-CoV-2 vaccine becomes available. Individuals who have symptoms of COVID-19 should not be vaccinated with influenza vaccine until they are considered noninfectious.

Encourage influenza vaccination. The COVID-19 pandemic may make it difficult to achieve desired community influenza vaccine levels because of decreased visits to medical facilities for preventive care, possible lower insurance coverage due to loss of employment, and a decrease in worksite mass vaccination programs. This makes it important for family physicians to encourage and offer influenza vaccines at their clinical sites.

Several evidence-based practices have been shown to improve vaccine uptake. Examples of such practices include patient reminder and recall systems that provide feedback to clinicians about rates of vaccination among patients, and establishing standing orders for vaccine administration that allow other health care providers to assess a patient’s immunization status and administer vaccinations according to a protocol.⁹ Finally, the CDC provides a video on how to recommend influenza vaccine to those who may be resistant (www.cdc.gov/vaccines/howirecommend/adult-vacc-videos.html).

The 2020-2021 influenza season is shaping up to be challenging. Its likely concurrence with the ongoing severe acute respiratory syndrome-coronavirus 2 (­SARS-coV-2) pandemic (COVID-19) will pose diagnostic and therapeutic dilemmas and could overload the hospital system. But there could also be potential synergies in preventing morbidity and mortality from each disease.

A consistent pattern overthe past few influenza seasons

During the 2019-2020 flu season, there were an estimated 410,000 to 740,000 hospitalizations and 24,000 to 62,000 deaths attributed to influenza.¹ As seen in FIGURE 1, office visits for influenza-like illness (ILI) began to increase in late November and early December in each of the last 3 years (2017-2018, 2018-2019, ­2019-2020) and stayed elevated above baseline for about 4 months each season.¹

The effectiveness of influenza vaccine during the 2019-2020 season is being estimated using the US Flu Vaccine Effectiveness Network, which has close to 9000 enrollees. Overall, it appears the vaccine was 39% effective against medically attended influenza, with a higher effectiveness against influenza B (44%) than against A/H1N1 (31%). Effectiveness against influenza B was similar in all age groups, but effectiveness against A/H1N1 was highest for those ages 50 to 64 years (45%) and lowest for those ages 6 months through 8 years (22%), although 95% confidence intervals overlapped for all age groups (FIGURE 2). These preliminary effectiveness rates were presented at the summer meeting of the Advisory Committee on Immunization Practices (ACIP).¹

Influenza vaccine safety data for ­2019-2020 were based on the Vaccine Adverse Event Reporting System (VAERS), a passive surveillance system, and on the Vaccine Safety Datalink (VSD) system, an active surveillance system involving close to 6 million doses administered at VSD sites. No safety concerns were identified for any of the different vaccine types. Both the VAERS and VSD surveillance systems have been described in more detail in a previous Practice Alert.²

Recommendations for 2020-2021

The composition of the influenza vaccines for this year’s flu season will be different for 3 of the 4 antigens: A/H1N1, A/H2N2 and B/Victoria.³ The antigens included in the influenza vaccines each year are decided on in the spring, based on surveillance of circulating strains around the world. The effectiveness of the vaccine each year largely depends on how well the strains included in the vaccine match those circulating in the United States during the influenza season.

The main immunization recommendation for preventing morbidity and mortality from influenza has not changed: All individuals ages 6 months and older without a contraindication should receive an influenza vaccine.⁴ The Centers for Disease Control and Prevention (CDC) recommends that patients receive the vaccine by the end of October.⁴ This includes the second dose for those children younger than 9 years who need 2 doses—ie, those who have received fewer than 2 doses of influenza vaccine prior to July 2020. Vaccination should continue through the end of the season for anyone who has not received a 2020-2021 influenza vaccine.

Two new influenza vaccine products are available for use in those ages 65 years and older: Fluzone high-dose quadrivalent and Fluad Quadrivalent (adjuvanted).⁴ Both of these products were available last year as trivalent options. Currently no specific vaccine product is listed as preferred by ACIP for those ages 65 and older.

Continue to: New vaccine contraindications

New vaccine contraindications. Four medical conditions have been added to the list of contraindications for quadrivalent live, attenuated influenza vaccine (LAIV4): cochlear implant, cerebrospinal fluid leak, asplenia (anatomic and functional), and sickle cell anemia.⁴ In addition, those who receive LAIV4 should not be prescribed an influenza antiviral until 2 weeks after receiving the vaccine. And the vaccine should not be administered for 48 hours after receipt of oseltamivir or zanamivir, 5 days after peramivir, and 17 days after baloxavir marboxil.⁴ This is to prevent possible antiviral inactivation of the live attenuated influenza viruses in the ­vaccine.

For those who have a history of severe allergic reaction to eggs, there are now 2 egg-free options: cell-culture-based inactivated vaccine (ccIIV4) and recombinant influenza vaccine (RIV4).^3,4 Urticaria alone is not considered a severe reaction. If neither of these egg-free options is available, a vaccine may still be administered in a medical setting supervised by a provider who is able to manage a severe allergic reaction (which rarely occurs).

All vaccine products available for the upcoming influenza season are listed and described on the CDC Web site, as is a summary of related recommendations.⁴ Particular attention should be paid to the dose of vaccine administered, as it differs by product for those ages 6 through 35 months of age and those ages 65 years and older.

Use of antiviral medications

Four antiviral medications are now available for treating influenza (3 neuraminidase inhibitors and 1 endonuclease inhibitor), and there are 2 agents for preventing influenza, both neuraminidase inhibitors (TABLE 1).⁵ The CDC recommends treating with antivirals as soon as possible if individuals with confirmed or suspected influenza require hospitalization; have severe, complicated, or progressive illness; or are at high risk for complications. Use antivirals based on clinical judgment if previously healthy individuals do not have severe complications and are not at increased risk for complications, and only if the medication can be started within 48 hours of symptom onset.

The CDC discourages widespread use of antivirals to prevent influenza, either pre- or postexposure, although it specifies certain situations in which usage would be acceptable (TABLE 2).⁵ There is some concern that widespread use could lead to the emergence of drug-resistant strains and that using postexposure dosing could lead to suboptimal treatment if influenza infection occurred before the start of prophylaxis. If postexposure antivirals are prescribed, they should be started within 48 hours of exposure and continued for 7 days after the last exposure.

Continue to: A potential perfect storm

While we have vaccines and antivirals to prevent influenza, and have effective antivirals for treatment, no prevention or treatment options exist for COVID-19, except, possibly, dexamethasone to reduce mortality among those seriously ill.⁶ The concurrence of influenza and COVID-19 will present unique challenges for the health care system.

Action steps. Keep abreast of the incidences of circulating SARS-coV-19 and influenza viruses in your community. The similar signs and symptoms of these 2 infectious agents will complicate diagnosis. Rapid, or point-of-care, tests for influenza are widely available, but their accuracy varies and not all tests detect both influenza A and B. The CDC lists approved point-of-care tests at www.cdc.gov/flu/professionals/diagnosis/table-ridt.html and advises on how to interpret these test results when influenza is and is not circulating in the community, at www.cdc.gov/flu/­professionals/diagnosis/clinician_­guidance_ridt.htm.

Clinical practice advice for both conditions should be implemented when any patient presents with ILI:⁷

• Most patients who are not seriously ill and have no conditions that place them at high risk for adverse outcomes can be treated symptomatically at home.
• Those with ILI should be tested for both influenza virus and SARS-CoV-2 if testing is available. It is possible to be co-infected.
• Sick patients should self-isolate at home for the duration of their symptoms.
• If others live in the house, the sick person should stay in a separate room and wear a mask. Everyone in the house should cover coughs and sneezes (if not wearing a mask), dispose of used tissues in a trash can (rather than leaving them on night stands and countertops), and wash hands frequently.
• All household members should be vaccinated against influenza. Those who are unvaccinated, and those at high risk who have been recently vaccinated, can consider influenza antiviral prophylaxis. If the sick family member is confirmed to have COVID-19, with no co-existing influenza, anti-influenza antiviral prophylaxis may be discontinued.
• Clinical infection control practices should be the same for anyone presenting with ILI.⁷ Enhanced clinic-based infection control practices to prevent spread of SARS-CoV-2 are listed in TABLE 3.⁸

Since there currently are no preventive medications proven to work for COVID-19, the main clinical decision physicians will have to make when a patient presents with ILI is whether to use antivirals to treat those who are at risk for complications based on the result of rapid, on-site influenza testing, or clinical presentation, or both. In this situation, knowledge of which viruses are circulating at high rates in the community could be valuable.

Milder season or perfect storm? The society-wide interventions that have been encouraged (although not mandated everywhere) to prevent community spread of ­SARS-CoV-2 should help prevent the community spread of influenza as well, and, if adhered to, may lead to a milder influenza season than would otherwise have occurred. However, given the uncertainties, the combination of influenza and coronavirus could present a perfect storm for the health care system and result in higher-than-normal morbidity and mortality from ILI and pneumonia overall.

Continue to: The possibility that one or more vaccines...

The possibility that one or more vaccines to prevent COVID-19 may be available in late 2020 or early 2021 offers hope. However, in current testing, the vaccine is not being given simultaneously with the influenza vaccine. If the potential for adverse interaction exists between the vaccines, it is important that influenza vaccine be given by mid- to late-October to avoid such an interaction if and when the new SARS-CoV-2 vaccine becomes available. Individuals who have symptoms of COVID-19 should not be vaccinated with influenza vaccine until they are considered noninfectious.

Encourage influenza vaccination. The COVID-19 pandemic may make it difficult to achieve desired community influenza vaccine levels because of decreased visits to medical facilities for preventive care, possible lower insurance coverage due to loss of employment, and a decrease in worksite mass vaccination programs. This makes it important for family physicians to encourage and offer influenza vaccines at their clinical sites.

Several evidence-based practices have been shown to improve vaccine uptake. Examples of such practices include patient reminder and recall systems that provide feedback to clinicians about rates of vaccination among patients, and establishing standing orders for vaccine administration that allow other health care providers to assess a patient’s immunization status and administer vaccinations according to a protocol.⁹ Finally, the CDC provides a video on how to recommend influenza vaccine to those who may be resistant (www.cdc.gov/vaccines/howirecommend/adult-vacc-videos.html).

A recent report by the Centers for Disease Control and Prevention (CDC) documents the trends in oral and pharyngeal cancers (OPC) in the United States over a 10-year period, 2007-2016.¹ The rate of OPC began to increase in 1999 and has been increasing ever since. The age-adjusted rate in 2007 was 10.89/100,000 compared with 11.7/100,000 in 2016 (TABLE 1¹). This is an annual relative increase of about 6% per year. In absolute numbers, there were 35,076 cases in 2007 and 44,419 in 2016.¹ The trends in ­incidence of OPC vary by anatomical site, with some increasing and others declining.

There are 3 known causal factors related to OPC: tobacco use, alcohol use, and human papillomavirus (HPV) infection. The CDC estimates that, overall, 70% of OPCs are caused by HPV.² However, while cancers at some oropharyngeal sites are likely related to HPV infection, cancers at other sites are not. The rising overall incidence of OPC is being driven by increases in HPV-related cancers at an average rate of 2.1% per year, while the rates at non-HPV-associated sites have been declining by 0.4% per year.¹ It is also important to appreciate that HPV causes cancer at other anatomical sites (TABLE 2²) and is responsible for an estimated 35,000 cancers per year.²

There is some evidence that if clinicians actively engage with parents about their vaccination concerns and address them head on, same-day vaccination rates can improve.

Other trends of note in all OPCs combined are increasing rates among non-­Hispanic whites and Asian-Pacific Islanders; decreasing rates among Hispanics and African Americans; increasing rates among males with no real change in rates among females; increasing rates in those 50 to 79 years of age; decreasing rates among those 40 to 49 years of age; and unchanged rates in other age groups.¹

The role of the family physician

Preventing OPC and all HPV-related cancers begins by encouraging patients to reduce alcohol and tobacco use and by emphasizing the importance of HPV vaccination. Educate teens and parents/guardians about HPV vaccine and its safety. Screen for tobacco and alcohol use, and offer brief clinical interventions as needed to decrease usage.

Recommendations by the US Preventive Services Task Force regarding screening for, and reducing use of, tobacco and alcohol, as well as screening for cervical cancer, are listed in TABLE 3.^3-6 Remember that cervical cancer screening is both a primary and secondary intervention: It can reduce mortality by preventing cervical cancer (via treatment of precancerous lesions) and by detecting cervical cancer early at more treatable stages.

HPV vaccination essentials. CDC recommendations for the use of HPV vaccine and the vaccine dosing schedule appear in TABLE 4.⁷ While it is true that the best evidence for HPV vaccine’s prevention of cancer comes from the study of cervical and anal cancers, it is reasonable to expect that it will also be proven over time to prevent other HPV-caused cancers as the rate of HPV infections declines.

HPV vaccine is underused. In a 2018 survey, only 68.1% of adolescents had received 1 or more doses of HPV vaccine, and only 51.1% were up to date.⁸ In contrast, 86.6% had received 1 or more doses of quadrivalent meningococcal vaccine; 88.9% had received 1 or more doses of tetanus, diphtheria & acellular pertussis vaccine; 91.9% were up to date with 2 or more doses of measles, mumps & rubella vaccine; and 92.1% were up to date with hepatitis B vaccine, with 3 or more doses.⁸

Continue to: Address parental concerns, including these 5 false beliefs

Address parental concerns, including these 5 false beliefs

One study found 5 major false beliefs parents hold about HPV vaccine⁹:

1. Vaccination is not effective at preventing cancer.
2. Pap smears are sufficient to prevent cervical cancer.
3. HPV vaccination is not safe.
4. HPV vaccination is not needed since most infections are naturally cleared by the immune system.
5. Eleven to 12 years of age is too young to vaccinate.

There is some evidence that if clinicians actively engage with parents about these concerns and address them head on, same-day vaccination rates can improve.¹⁰

We can expect to see HPV-associated OPC decline in the coming years due to the delayed effects on cancer incidence by the HPV vaccine. These anticipated declines will be more dramatic if we can increase the uptake of the HPV vaccine.

A recent report by the Centers for Disease Control and Prevention (CDC) documents the trends in oral and pharyngeal cancers (OPC) in the United States over a 10-year period, 2007-2016.¹ The rate of OPC began to increase in 1999 and has been increasing ever since. The age-adjusted rate in 2007 was 10.89/100,000 compared with 11.7/100,000 in 2016 (TABLE 1¹). This is an annual relative increase of about 6% per year. In absolute numbers, there were 35,076 cases in 2007 and 44,419 in 2016.¹ The trends in ­incidence of OPC vary by anatomical site, with some increasing and others declining.

There are 3 known causal factors related to OPC: tobacco use, alcohol use, and human papillomavirus (HPV) infection. The CDC estimates that, overall, 70% of OPCs are caused by HPV.² However, while cancers at some oropharyngeal sites are likely related to HPV infection, cancers at other sites are not. The rising overall incidence of OPC is being driven by increases in HPV-related cancers at an average rate of 2.1% per year, while the rates at non-HPV-associated sites have been declining by 0.4% per year.¹ It is also important to appreciate that HPV causes cancer at other anatomical sites (TABLE 2²) and is responsible for an estimated 35,000 cancers per year.²

There is some evidence that if clinicians actively engage with parents about their vaccination concerns and address them head on, same-day vaccination rates can improve.

Other trends of note in all OPCs combined are increasing rates among non-­Hispanic whites and Asian-Pacific Islanders; decreasing rates among Hispanics and African Americans; increasing rates among males with no real change in rates among females; increasing rates in those 50 to 79 years of age; decreasing rates among those 40 to 49 years of age; and unchanged rates in other age groups.¹

The role of the family physician

Preventing OPC and all HPV-related cancers begins by encouraging patients to reduce alcohol and tobacco use and by emphasizing the importance of HPV vaccination. Educate teens and parents/guardians about HPV vaccine and its safety. Screen for tobacco and alcohol use, and offer brief clinical interventions as needed to decrease usage.

Recommendations by the US Preventive Services Task Force regarding screening for, and reducing use of, tobacco and alcohol, as well as screening for cervical cancer, are listed in TABLE 3.^3-6 Remember that cervical cancer screening is both a primary and secondary intervention: It can reduce mortality by preventing cervical cancer (via treatment of precancerous lesions) and by detecting cervical cancer early at more treatable stages.

HPV vaccination essentials. CDC recommendations for the use of HPV vaccine and the vaccine dosing schedule appear in TABLE 4.⁷ While it is true that the best evidence for HPV vaccine’s prevention of cancer comes from the study of cervical and anal cancers, it is reasonable to expect that it will also be proven over time to prevent other HPV-caused cancers as the rate of HPV infections declines.

HPV vaccine is underused. In a 2018 survey, only 68.1% of adolescents had received 1 or more doses of HPV vaccine, and only 51.1% were up to date.⁸ In contrast, 86.6% had received 1 or more doses of quadrivalent meningococcal vaccine; 88.9% had received 1 or more doses of tetanus, diphtheria & acellular pertussis vaccine; 91.9% were up to date with 2 or more doses of measles, mumps & rubella vaccine; and 92.1% were up to date with hepatitis B vaccine, with 3 or more doses.⁸

Continue to: Address parental concerns, including these 5 false beliefs

Address parental concerns, including these 5 false beliefs

One study found 5 major false beliefs parents hold about HPV vaccine⁹:

1. Vaccination is not effective at preventing cancer.
2. Pap smears are sufficient to prevent cervical cancer.
3. HPV vaccination is not safe.
4. HPV vaccination is not needed since most infections are naturally cleared by the immune system.
5. Eleven to 12 years of age is too young to vaccinate.

There is some evidence that if clinicians actively engage with parents about these concerns and address them head on, same-day vaccination rates can improve.¹⁰

We can expect to see HPV-associated OPC decline in the coming years due to the delayed effects on cancer incidence by the HPV vaccine. These anticipated declines will be more dramatic if we can increase the uptake of the HPV vaccine.

A recent report by the Centers for Disease Control and Prevention (CDC) documents the trends in oral and pharyngeal cancers (OPC) in the United States over a 10-year period, 2007-2016.¹ The rate of OPC began to increase in 1999 and has been increasing ever since. The age-adjusted rate in 2007 was 10.89/100,000 compared with 11.7/100,000 in 2016 (TABLE 1¹). This is an annual relative increase of about 6% per year. In absolute numbers, there were 35,076 cases in 2007 and 44,419 in 2016.¹ The trends in ­incidence of OPC vary by anatomical site, with some increasing and others declining.

There are 3 known causal factors related to OPC: tobacco use, alcohol use, and human papillomavirus (HPV) infection. The CDC estimates that, overall, 70% of OPCs are caused by HPV.² However, while cancers at some oropharyngeal sites are likely related to HPV infection, cancers at other sites are not. The rising overall incidence of OPC is being driven by increases in HPV-related cancers at an average rate of 2.1% per year, while the rates at non-HPV-associated sites have been declining by 0.4% per year.¹ It is also important to appreciate that HPV causes cancer at other anatomical sites (TABLE 2²) and is responsible for an estimated 35,000 cancers per year.²

There is some evidence that if clinicians actively engage with parents about their vaccination concerns and address them head on, same-day vaccination rates can improve.

Other trends of note in all OPCs combined are increasing rates among non-­Hispanic whites and Asian-Pacific Islanders; decreasing rates among Hispanics and African Americans; increasing rates among males with no real change in rates among females; increasing rates in those 50 to 79 years of age; decreasing rates among those 40 to 49 years of age; and unchanged rates in other age groups.¹

The role of the family physician

Preventing OPC and all HPV-related cancers begins by encouraging patients to reduce alcohol and tobacco use and by emphasizing the importance of HPV vaccination. Educate teens and parents/guardians about HPV vaccine and its safety. Screen for tobacco and alcohol use, and offer brief clinical interventions as needed to decrease usage.

Recommendations by the US Preventive Services Task Force regarding screening for, and reducing use of, tobacco and alcohol, as well as screening for cervical cancer, are listed in TABLE 3.^3-6 Remember that cervical cancer screening is both a primary and secondary intervention: It can reduce mortality by preventing cervical cancer (via treatment of precancerous lesions) and by detecting cervical cancer early at more treatable stages.

HPV vaccination essentials. CDC recommendations for the use of HPV vaccine and the vaccine dosing schedule appear in TABLE 4.⁷ While it is true that the best evidence for HPV vaccine’s prevention of cancer comes from the study of cervical and anal cancers, it is reasonable to expect that it will also be proven over time to prevent other HPV-caused cancers as the rate of HPV infections declines.

HPV vaccine is underused. In a 2018 survey, only 68.1% of adolescents had received 1 or more doses of HPV vaccine, and only 51.1% were up to date.⁸ In contrast, 86.6% had received 1 or more doses of quadrivalent meningococcal vaccine; 88.9% had received 1 or more doses of tetanus, diphtheria & acellular pertussis vaccine; 91.9% were up to date with 2 or more doses of measles, mumps & rubella vaccine; and 92.1% were up to date with hepatitis B vaccine, with 3 or more doses.⁸

Continue to: Address parental concerns, including these 5 false beliefs

Address parental concerns, including these 5 false beliefs

One study found 5 major false beliefs parents hold about HPV vaccine⁹:

1. Vaccination is not effective at preventing cancer.
2. Pap smears are sufficient to prevent cervical cancer.
3. HPV vaccination is not safe.
4. HPV vaccination is not needed since most infections are naturally cleared by the immune system.
5. Eleven to 12 years of age is too young to vaccinate.

There is some evidence that if clinicians actively engage with parents about these concerns and address them head on, same-day vaccination rates can improve.¹⁰

We can expect to see HPV-associated OPC decline in the coming years due to the delayed effects on cancer incidence by the HPV vaccine. These anticipated declines will be more dramatic if we can increase the uptake of the HPV vaccine.

In 2019, the US Preventive Services Task Force published 19 recommendation statements on 11 topics. Two of the topics are new; 9 are topics the Task Force had previously reviewed and has updated (TABLE 1). Three of these topics have been covered in Practice Alert podcasts (mdedge.com/familymedicine) and will not be discussed here: risk assessment, genetic counseling, and genetic testing for breast cancer susceptibility gene mutations (October 2019); medications to reduce the risk of breast cancer (December 2019); and preexposure prophylaxis to prevent HIV infections (January 2020).

Of the 19 recommendation statements made in 2019 (TABLE 2), 5 were rated “A” and 5 were “B,” meaning the evidence shows that benefits outweigh harms and these interventions should be offered in primary care practice. There were 5 “D” recommendations for interventions that should not be offered because they are either ineffective or harms exceed benefits. There were 3 “I” statements on interventions having insufficient evidence on benefits or harms to warrant a recommendation. Only 1 recommendation was rated “C” (selectively offer based on individual factors); this assessment is the hardest one to interpret and implement. Keep in mind that all “A” and “B” recommendations must be covered by commercial health plans with no out-of-pocket cost to the patient (ie, no co-pay or deductible).

New recommendation on preventing perinatal depression

One of 2 new topics reviewed in 2019 was the prevention of perinatal depression. (As noted, the other on preexposure prophylaxis to prevent HIV infection has already been covered in a Practice Alert podcast.) The Task Force found that the prevalence of depression is estimated at 8.9% among pregnant women and 37% at any point in the first year postpartum.¹

Depression during pregnancy and the postpartum period is associated with adverse effects on the mother and infant, including higher rates of suicide and suicidal ideation and thoughts of harming the infant.¹ Women with perinatal depression are also more likely to exhibit significantly lower levels of positive maternal behaviors, such as praising and playing with their child,² and higher rates of negative maternal behaviors.² Perinatal depression is also associated with increased rates of preterm birth and low birth weight.³

Mothers with postpartum depression have higher rates of early termination of breast feeding and lower adherence for recommended child preventive services including vaccination.¹ Children of mothers with perinatal depression develop more behavior problems, have lower cognitive functioning, and have an increased risk of psychiatric disorders than do children of mothers without this condition.^4,5

A number of risk factors are associated with perinatal depression, but no screening tool was found to have enough predictive value to be recommended. In deciding who should receive an offer or referral for counseling, the Task Force recommends as a practical approach providing “counseling interventions to women with 1 or more of the following: a history of depression, current depressive symptoms (that do not reach a diagnostic threshold), certain socioeconomic risk factors such as low income or adolescent or single parenthood, recent intimate partner violence, or mental health-related factors such as elevated anxiety symptoms or a history of significant negative life events.”¹

There is no conclusive evidence to guide timing of counseling interventions, but most studies reviewed started them in the second trimester. These studies included cognitive behavioral therapy and interpersonal therapy and involved counseling sessions that ranged from 4 to 20 sessions and lasted for 4 to 70 weeks. They involved group and individual sessions, mostly in-person visits, and were provided by a variety of health professionals.⁶

Continue to: The studies reviewed showed...

The studies reviewed showed that counseling interventions reduced the likelihood of developing depression symptoms by 39%, with a number needed to treat of 13.5.⁶ Studies that looked at pregnancy and maternal and infant clinical outcomes were mixed but usually found little to no difference with counseling.⁶ Even so, the Task Force felt that a reduction in depression itself was enough to warrant a “B” recommendation.

Screening for abdominal aortic aneurisms

Ultrasound is underused in screening for abdominal aortic aneurisms (AAA) and preventing death from their rupture. (See “Whom should you screen for abdominal aortic aneurysm?”) The prevalence of AAA is the United States is unknown; in other western countries it varies from 1.2% to 3.3% in men and is declining due to decreased rates of smoking, the primary risk factor.

The risk of AAA rupture is related to the size of the aneurism, and surgical repair (either endovascular or open repair) is usually reserved for lesions > 5.5 cm in diameter or for smaller ones that are rapidly increasing in size. The standard of care for most aneurysms < 5.5 cm is to periodically monitor growth ­using ultrasound.

The 2019 recommendations on AAA screening are essentially the same as those made in 2004; evaluation of new evidence supported the previous recommendations. The Task Force recommends one-time screening for men ages 65 to 75 years who have ever smoked (B recommendation). Selective screening is recommended for men in this age group who have never smoked, based mainly on personal factors such as a family history of AAA, the presence of other arterial aneurisms, and the number of risk factors for cardiovascular disease (C recommendation).

The Task Force recommends against screening women ages 65 to 75 years with no history of smoking or family history of AAA, while the evidence was felt to be insufficient to make a recommendation for women in this age range who have either risk factor. This is problematic for family physicians since women with these risk factors are at increased risk of AAA compared with women without risk factors.⁸ And aneurisms in women appear to rupture more frequently at smaller sizes, although at a later age than in men.⁸ Operative mortality is also higher in women than in men⁸ and there is no direct evidence that screening improves outcomes for women.

Continue to: Screening for asymptomatic bacteriuria

The Task Force re-examined and reconfirmed its previous recommendations on screening for asymptomatic bacteriuria in adults. It recommends in favor of it for pregnant women, using a urine culture to screen, and against it for all other adults. There is good evidence that treating screen-detected asymptomatic bacteriuria in pregnant women reduces the incidence of pyelonephritis in pregnancy.

The Task Force made this a “B” recommendation based on a lower prevalence of pyelonephritis found in more recent studies, making the overall magnitude of benefits moderate. There is also good evidence that treating asymptomatic bacteriuria in nonpregnant adults offers no benefits.⁹ The Task Force has re-examined this topic 5 times since 1996 with essentially the same results.

Screening for elevated lead levels in children and pregnant women

In 2019 the Task Force changed its 2006 recommendation on screening for elevated lead levels. The earlier recommendation advised against screening both children ages 1 to 5 years and pregnant women at average risk for elevated blood lead levels. In 2006 the Task Force also felt that evidence was insufficient to make a recommendation regarding children ages 1 to 5 years at elevated risk.

The Task Force now believes the evidence is insufficient to make a recommendation for all children ages 1 to 5 years and for pregnant women, thus moving from a “D” to an “I” recommendation for children and pregnant women with average risk. Even though there is little evidence to support screening for elevated lead levels in children ages 1 to 5 years and in pregnant women, the Task Force apparently did not feel comfortable recommending against testing, given that the cutoff for elevated blood lead levels has been lowered from 10 to 5 mcg/dL and that other sources of lead may now be more prevalent than in 2006.¹⁰

Perinatal counseling of women with known risks of depression reduces the likelihood of depressive symptoms by 39%.

Remember that the Medicaid Early and Periodic Screening, Diagnostic, and Treatment program requires that all children receive a blood lead test twice, at ages 12 and 24 months, and that previously unscreened children ages 36 to 72 months must be tested once.

Continue to: Additional updates with no recommendation changes

Four other topics were re-examined by the Task Force in 2019, resulting in no significant changes to recommendations (TABLE 2):

• Screen for hepatitis B infection in pregnant women at the first prenatal visit (A recommendation; updated from 2009).
• Screen for HIV infection in adolescents and adults ages 15 to 65 years, and in those younger and older who are at high risk, and during pregnancy (A recommendation; updated from 2013).
• Provide topical medication for all newborns to prevent gonococcal ophthalmia neonatorum (A recommendation; first recommendation in 1996, updated in 2005 and 2011).
• Avoid screening for pancreatic cancer in asymptomatic adults (D recommendation; updated from 2004).

Affirmation of USPSTF’s value

In only 1 out of 9 reassessments of past topics did the Task Force modify its previous recommendations in any significant way. This demonstrates that recommendations will usually stand the test of time if they are made using robust, evidence-based methods (that consider both benefits and harms) and they are not made when evidence is insufficient. That only 2 new topics could be addressed in 2019 may reflect a need for more resources for the Task Force.

In 2019, the US Preventive Services Task Force published 19 recommendation statements on 11 topics. Two of the topics are new; 9 are topics the Task Force had previously reviewed and has updated (TABLE 1). Three of these topics have been covered in Practice Alert podcasts (mdedge.com/familymedicine) and will not be discussed here: risk assessment, genetic counseling, and genetic testing for breast cancer susceptibility gene mutations (October 2019); medications to reduce the risk of breast cancer (December 2019); and preexposure prophylaxis to prevent HIV infections (January 2020).

Of the 19 recommendation statements made in 2019 (TABLE 2), 5 were rated “A” and 5 were “B,” meaning the evidence shows that benefits outweigh harms and these interventions should be offered in primary care practice. There were 5 “D” recommendations for interventions that should not be offered because they are either ineffective or harms exceed benefits. There were 3 “I” statements on interventions having insufficient evidence on benefits or harms to warrant a recommendation. Only 1 recommendation was rated “C” (selectively offer based on individual factors); this assessment is the hardest one to interpret and implement. Keep in mind that all “A” and “B” recommendations must be covered by commercial health plans with no out-of-pocket cost to the patient (ie, no co-pay or deductible).

New recommendation on preventing perinatal depression

One of 2 new topics reviewed in 2019 was the prevention of perinatal depression. (As noted, the other on preexposure prophylaxis to prevent HIV infection has already been covered in a Practice Alert podcast.) The Task Force found that the prevalence of depression is estimated at 8.9% among pregnant women and 37% at any point in the first year postpartum.¹

Depression during pregnancy and the postpartum period is associated with adverse effects on the mother and infant, including higher rates of suicide and suicidal ideation and thoughts of harming the infant.¹ Women with perinatal depression are also more likely to exhibit significantly lower levels of positive maternal behaviors, such as praising and playing with their child,² and higher rates of negative maternal behaviors.² Perinatal depression is also associated with increased rates of preterm birth and low birth weight.³

Mothers with postpartum depression have higher rates of early termination of breast feeding and lower adherence for recommended child preventive services including vaccination.¹ Children of mothers with perinatal depression develop more behavior problems, have lower cognitive functioning, and have an increased risk of psychiatric disorders than do children of mothers without this condition.^4,5

A number of risk factors are associated with perinatal depression, but no screening tool was found to have enough predictive value to be recommended. In deciding who should receive an offer or referral for counseling, the Task Force recommends as a practical approach providing “counseling interventions to women with 1 or more of the following: a history of depression, current depressive symptoms (that do not reach a diagnostic threshold), certain socioeconomic risk factors such as low income or adolescent or single parenthood, recent intimate partner violence, or mental health-related factors such as elevated anxiety symptoms or a history of significant negative life events.”¹

There is no conclusive evidence to guide timing of counseling interventions, but most studies reviewed started them in the second trimester. These studies included cognitive behavioral therapy and interpersonal therapy and involved counseling sessions that ranged from 4 to 20 sessions and lasted for 4 to 70 weeks. They involved group and individual sessions, mostly in-person visits, and were provided by a variety of health professionals.⁶

Continue to: The studies reviewed showed...

The studies reviewed showed that counseling interventions reduced the likelihood of developing depression symptoms by 39%, with a number needed to treat of 13.5.⁶ Studies that looked at pregnancy and maternal and infant clinical outcomes were mixed but usually found little to no difference with counseling.⁶ Even so, the Task Force felt that a reduction in depression itself was enough to warrant a “B” recommendation.

Screening for abdominal aortic aneurisms

Ultrasound is underused in screening for abdominal aortic aneurisms (AAA) and preventing death from their rupture. (See “Whom should you screen for abdominal aortic aneurysm?”) The prevalence of AAA is the United States is unknown; in other western countries it varies from 1.2% to 3.3% in men and is declining due to decreased rates of smoking, the primary risk factor.

The risk of AAA rupture is related to the size of the aneurism, and surgical repair (either endovascular or open repair) is usually reserved for lesions > 5.5 cm in diameter or for smaller ones that are rapidly increasing in size. The standard of care for most aneurysms < 5.5 cm is to periodically monitor growth ­using ultrasound.

The 2019 recommendations on AAA screening are essentially the same as those made in 2004; evaluation of new evidence supported the previous recommendations. The Task Force recommends one-time screening for men ages 65 to 75 years who have ever smoked (B recommendation). Selective screening is recommended for men in this age group who have never smoked, based mainly on personal factors such as a family history of AAA, the presence of other arterial aneurisms, and the number of risk factors for cardiovascular disease (C recommendation).

The Task Force recommends against screening women ages 65 to 75 years with no history of smoking or family history of AAA, while the evidence was felt to be insufficient to make a recommendation for women in this age range who have either risk factor. This is problematic for family physicians since women with these risk factors are at increased risk of AAA compared with women without risk factors.⁸ And aneurisms in women appear to rupture more frequently at smaller sizes, although at a later age than in men.⁸ Operative mortality is also higher in women than in men⁸ and there is no direct evidence that screening improves outcomes for women.

Continue to: Screening for asymptomatic bacteriuria

The Task Force re-examined and reconfirmed its previous recommendations on screening for asymptomatic bacteriuria in adults. It recommends in favor of it for pregnant women, using a urine culture to screen, and against it for all other adults. There is good evidence that treating screen-detected asymptomatic bacteriuria in pregnant women reduces the incidence of pyelonephritis in pregnancy.

The Task Force made this a “B” recommendation based on a lower prevalence of pyelonephritis found in more recent studies, making the overall magnitude of benefits moderate. There is also good evidence that treating asymptomatic bacteriuria in nonpregnant adults offers no benefits.⁹ The Task Force has re-examined this topic 5 times since 1996 with essentially the same results.

Screening for elevated lead levels in children and pregnant women

In 2019 the Task Force changed its 2006 recommendation on screening for elevated lead levels. The earlier recommendation advised against screening both children ages 1 to 5 years and pregnant women at average risk for elevated blood lead levels. In 2006 the Task Force also felt that evidence was insufficient to make a recommendation regarding children ages 1 to 5 years at elevated risk.

The Task Force now believes the evidence is insufficient to make a recommendation for all children ages 1 to 5 years and for pregnant women, thus moving from a “D” to an “I” recommendation for children and pregnant women with average risk. Even though there is little evidence to support screening for elevated lead levels in children ages 1 to 5 years and in pregnant women, the Task Force apparently did not feel comfortable recommending against testing, given that the cutoff for elevated blood lead levels has been lowered from 10 to 5 mcg/dL and that other sources of lead may now be more prevalent than in 2006.¹⁰

Perinatal counseling of women with known risks of depression reduces the likelihood of depressive symptoms by 39%.

Remember that the Medicaid Early and Periodic Screening, Diagnostic, and Treatment program requires that all children receive a blood lead test twice, at ages 12 and 24 months, and that previously unscreened children ages 36 to 72 months must be tested once.

Continue to: Additional updates with no recommendation changes

Four other topics were re-examined by the Task Force in 2019, resulting in no significant changes to recommendations (TABLE 2):

• Screen for hepatitis B infection in pregnant women at the first prenatal visit (A recommendation; updated from 2009).
• Screen for HIV infection in adolescents and adults ages 15 to 65 years, and in those younger and older who are at high risk, and during pregnancy (A recommendation; updated from 2013).
• Provide topical medication for all newborns to prevent gonococcal ophthalmia neonatorum (A recommendation; first recommendation in 1996, updated in 2005 and 2011).
• Avoid screening for pancreatic cancer in asymptomatic adults (D recommendation; updated from 2004).

Affirmation of USPSTF’s value

In only 1 out of 9 reassessments of past topics did the Task Force modify its previous recommendations in any significant way. This demonstrates that recommendations will usually stand the test of time if they are made using robust, evidence-based methods (that consider both benefits and harms) and they are not made when evidence is insufficient. That only 2 new topics could be addressed in 2019 may reflect a need for more resources for the Task Force.

In 2019, the US Preventive Services Task Force published 19 recommendation statements on 11 topics. Two of the topics are new; 9 are topics the Task Force had previously reviewed and has updated (TABLE 1). Three of these topics have been covered in Practice Alert podcasts (mdedge.com/familymedicine) and will not be discussed here: risk assessment, genetic counseling, and genetic testing for breast cancer susceptibility gene mutations (October 2019); medications to reduce the risk of breast cancer (December 2019); and preexposure prophylaxis to prevent HIV infections (January 2020).

Of the 19 recommendation statements made in 2019 (TABLE 2), 5 were rated “A” and 5 were “B,” meaning the evidence shows that benefits outweigh harms and these interventions should be offered in primary care practice. There were 5 “D” recommendations for interventions that should not be offered because they are either ineffective or harms exceed benefits. There were 3 “I” statements on interventions having insufficient evidence on benefits or harms to warrant a recommendation. Only 1 recommendation was rated “C” (selectively offer based on individual factors); this assessment is the hardest one to interpret and implement. Keep in mind that all “A” and “B” recommendations must be covered by commercial health plans with no out-of-pocket cost to the patient (ie, no co-pay or deductible).

New recommendation on preventing perinatal depression

One of 2 new topics reviewed in 2019 was the prevention of perinatal depression. (As noted, the other on preexposure prophylaxis to prevent HIV infection has already been covered in a Practice Alert podcast.) The Task Force found that the prevalence of depression is estimated at 8.9% among pregnant women and 37% at any point in the first year postpartum.¹

Depression during pregnancy and the postpartum period is associated with adverse effects on the mother and infant, including higher rates of suicide and suicidal ideation and thoughts of harming the infant.¹ Women with perinatal depression are also more likely to exhibit significantly lower levels of positive maternal behaviors, such as praising and playing with their child,² and higher rates of negative maternal behaviors.² Perinatal depression is also associated with increased rates of preterm birth and low birth weight.³

Mothers with postpartum depression have higher rates of early termination of breast feeding and lower adherence for recommended child preventive services including vaccination.¹ Children of mothers with perinatal depression develop more behavior problems, have lower cognitive functioning, and have an increased risk of psychiatric disorders than do children of mothers without this condition.^4,5

A number of risk factors are associated with perinatal depression, but no screening tool was found to have enough predictive value to be recommended. In deciding who should receive an offer or referral for counseling, the Task Force recommends as a practical approach providing “counseling interventions to women with 1 or more of the following: a history of depression, current depressive symptoms (that do not reach a diagnostic threshold), certain socioeconomic risk factors such as low income or adolescent or single parenthood, recent intimate partner violence, or mental health-related factors such as elevated anxiety symptoms or a history of significant negative life events.”¹

There is no conclusive evidence to guide timing of counseling interventions, but most studies reviewed started them in the second trimester. These studies included cognitive behavioral therapy and interpersonal therapy and involved counseling sessions that ranged from 4 to 20 sessions and lasted for 4 to 70 weeks. They involved group and individual sessions, mostly in-person visits, and were provided by a variety of health professionals.⁶

Continue to: The studies reviewed showed...

The studies reviewed showed that counseling interventions reduced the likelihood of developing depression symptoms by 39%, with a number needed to treat of 13.5.⁶ Studies that looked at pregnancy and maternal and infant clinical outcomes were mixed but usually found little to no difference with counseling.⁶ Even so, the Task Force felt that a reduction in depression itself was enough to warrant a “B” recommendation.

Screening for abdominal aortic aneurisms

Ultrasound is underused in screening for abdominal aortic aneurisms (AAA) and preventing death from their rupture. (See “Whom should you screen for abdominal aortic aneurysm?”) The prevalence of AAA is the United States is unknown; in other western countries it varies from 1.2% to 3.3% in men and is declining due to decreased rates of smoking, the primary risk factor.

The risk of AAA rupture is related to the size of the aneurism, and surgical repair (either endovascular or open repair) is usually reserved for lesions > 5.5 cm in diameter or for smaller ones that are rapidly increasing in size. The standard of care for most aneurysms < 5.5 cm is to periodically monitor growth ­using ultrasound.

The 2019 recommendations on AAA screening are essentially the same as those made in 2004; evaluation of new evidence supported the previous recommendations. The Task Force recommends one-time screening for men ages 65 to 75 years who have ever smoked (B recommendation). Selective screening is recommended for men in this age group who have never smoked, based mainly on personal factors such as a family history of AAA, the presence of other arterial aneurisms, and the number of risk factors for cardiovascular disease (C recommendation).

The Task Force recommends against screening women ages 65 to 75 years with no history of smoking or family history of AAA, while the evidence was felt to be insufficient to make a recommendation for women in this age range who have either risk factor. This is problematic for family physicians since women with these risk factors are at increased risk of AAA compared with women without risk factors.⁸ And aneurisms in women appear to rupture more frequently at smaller sizes, although at a later age than in men.⁸ Operative mortality is also higher in women than in men⁸ and there is no direct evidence that screening improves outcomes for women.

Continue to: Screening for asymptomatic bacteriuria

The Task Force re-examined and reconfirmed its previous recommendations on screening for asymptomatic bacteriuria in adults. It recommends in favor of it for pregnant women, using a urine culture to screen, and against it for all other adults. There is good evidence that treating screen-detected asymptomatic bacteriuria in pregnant women reduces the incidence of pyelonephritis in pregnancy.

The Task Force made this a “B” recommendation based on a lower prevalence of pyelonephritis found in more recent studies, making the overall magnitude of benefits moderate. There is also good evidence that treating asymptomatic bacteriuria in nonpregnant adults offers no benefits.⁹ The Task Force has re-examined this topic 5 times since 1996 with essentially the same results.

Screening for elevated lead levels in children and pregnant women

In 2019 the Task Force changed its 2006 recommendation on screening for elevated lead levels. The earlier recommendation advised against screening both children ages 1 to 5 years and pregnant women at average risk for elevated blood lead levels. In 2006 the Task Force also felt that evidence was insufficient to make a recommendation regarding children ages 1 to 5 years at elevated risk.

The Task Force now believes the evidence is insufficient to make a recommendation for all children ages 1 to 5 years and for pregnant women, thus moving from a “D” to an “I” recommendation for children and pregnant women with average risk. Even though there is little evidence to support screening for elevated lead levels in children ages 1 to 5 years and in pregnant women, the Task Force apparently did not feel comfortable recommending against testing, given that the cutoff for elevated blood lead levels has been lowered from 10 to 5 mcg/dL and that other sources of lead may now be more prevalent than in 2006.¹⁰

Perinatal counseling of women with known risks of depression reduces the likelihood of depressive symptoms by 39%.

Remember that the Medicaid Early and Periodic Screening, Diagnostic, and Treatment program requires that all children receive a blood lead test twice, at ages 12 and 24 months, and that previously unscreened children ages 36 to 72 months must be tested once.

Continue to: Additional updates with no recommendation changes

Four other topics were re-examined by the Task Force in 2019, resulting in no significant changes to recommendations (TABLE 2):

• Screen for hepatitis B infection in pregnant women at the first prenatal visit (A recommendation; updated from 2009).
• Screen for HIV infection in adolescents and adults ages 15 to 65 years, and in those younger and older who are at high risk, and during pregnancy (A recommendation; updated from 2013).
• Provide topical medication for all newborns to prevent gonococcal ophthalmia neonatorum (A recommendation; first recommendation in 1996, updated in 2005 and 2011).
• Avoid screening for pancreatic cancer in asymptomatic adults (D recommendation; updated from 2004).

Affirmation of USPSTF’s value

In only 1 out of 9 reassessments of past topics did the Task Force modify its previous recommendations in any significant way. This demonstrates that recommendations will usually stand the test of time if they are made using robust, evidence-based methods (that consider both benefits and harms) and they are not made when evidence is insufficient. That only 2 new topics could be addressed in 2019 may reflect a need for more resources for the Task Force.

Every year the Advisory Committee on Immunization Practices (ACIP) updates the recommended immunization schedules for children/adolescents and adults on the Web site of the Centers for Disease Control and Prevention (www.cdc.gov/vaccines/schedules/hcp/index.html). The schedules for 2020 reflect additions and changes adopted by ACIP in 2019 and are discussed in this Practice Alert.

Hepatitis A: New directives on homelessness, HIV, and vaccine catch-up

Hepatitis A (HepA) vaccination is recommended for children ages 12 to 23 months, and for those at increased risk for hepatitis A virus (HAV) infection or for complications from HAV infection (TABLE 1).^1-3 Routine vaccination is either 2 doses of HepA given 6 months apart or a 3-dose schedule of combined hepatitis A and B vaccine (Twinrix). Vaccines licensed in the United States for the prevention of HAV infection are listed in TABLE 2.¹

ACIP recently added homeless individuals to the list of those who should receive HepA vaccine.⁴ This step was taken in response to numerous outbreaks among those who are homeless or who use illicit drugs. These outbreaks have increased rates of HAV infection overall as well as rates of hospitalization (71%) and death (3%) among those infected.⁵ Concern about a homeless individual’s ability to complete a 2- or 3-dose series should not preclude initiating HepA vaccination; even 1 dose achieves protective immunity in 94% to 100% of those who have intact immune systems.²

At its June 2019 meeting, ACIP made 2 other additions to its recommendations regarding HepA vaccination.¹ First, those infected with the human immunodeficiency virus (HIV) are now among the individuals who should receive HepA vaccine. Those who are HIV-positive and ≥ 1 year old were recommended for HepA vaccination because they often have one of the other risks for HAV infection and have higher rates of complications and prolonged infections if they contract HAV.¹ Second, catch-up HepA vaccination is indicated for children and adolescents ages 2 through 18 years who have not been previously vaccinated.¹Also at the June 2019 meeting, the safety of HepA vaccination during pregnancy was confirmed. ACIP recommends HepA vaccine for any pregnant woman not previously vaccinated who is at risk for HAV infection or for a severe outcome from HAV infection.¹

Japanese encephalitis: Vaccination can be accelerated

Japanese encephalitis (JE) is a serious mosquito-borne vaccine-preventable infection endemic to most of Asia and parts of the western Pacific. Most travelers to countries with endemic JE are at low risk of infection. But risk increases with prolonged visits to these areas and particularly during the JE virus transmission season (summer/fall in temperate areas; year-round in tropical climates). Risk is also heightened by traveling to, or living in, rural Asian areas, by participating in extensive outdoor activities, and by staying in accommodations without air-conditioning, screens, or bed nets.⁶

The only JE vaccine licensed in the United States is JE-VC (Ixiaro), manufactured by Valneva Austria GmbH. It is approved for use in children ≥ 2 months and adults. It requires a 2-dose series with 28 days between doses, and a booster after 1 year. ACIP recently approved an accelerated schedule for adults ages 18 to 65 years that allows the second dose to be administered as early as 7 days after the first. A full description of the epidemiology of JE and ACIP recommendations regarding ­JE-VC were published in July 2019.⁶

Meningococcal B vaccine booster doses recommended

Meningococcal B (MenB) vaccine is recommended for individuals ≥ 10 years old who are at increased risk of meningococcal infection, including those with complement deficiency, complement inhibitor use, or asplenia; microbiologists; and individuals exposed during an outbreak.⁷ It is also recommended for those ages 16 to 23 years who desire vaccination after individual clinical decision making.⁸

Continue to: Two MenB vaccines...

Consider HepA vaccine for any pregnant woman not previously vaccinated who is at risk for hepatitis A virus infection.

Two MenB vaccines are available in the United States: MenB-FHbp (Trumenba, ­Wyeth Pharmaceuticals, Inc.) and MenB-4C (Bexsero, GlaxoSmithKline). Either MenB vaccine can be used; however, they are not interchangeable and the same product must be used for all doses an individual receives. MenB-FHbp is licensed as a 3-dose series given at 0, 1-2, and 6 months, or as a 2-dose series given at 0 and 6 months. ACIP recommends the 3-dose schedule for individuals at increased risk for meningococcal disease or for use during community outbreaks of serogroup B meningococcal disease.⁹ For healthy adolescents who are not at increased risk for meningococcal disease, ACIP recommends using the 2-dose schedule of MenB-FHbp.⁹ MenB-4C is licensed as a 2-dose series, with doses administered at least 1 month apart.

At the June 2019 meeting, ACIP voted to recommend a MenB booster dose for those who are still at increased risk 1 year following completion of a MenB primary series, followed by booster doses every 2 to 3 years thereafter for as long as increased risk remains. This recommendation was made because of a rapid waning of immunity following the primary series and subsequent booster doses. A booster dose was not recommended for those who choose to be vaccinated after clinical decision making unless they are exposed during an outbreak and it has been at least a year since they received the primary series. An interval of 6 months for the booster can be considered, depending on the outbreak situation.¹⁰

A new DTaP product, and substituting Tdap for Td is approved

Diphtheria and tetanus toxoids and acellular pertussis vaccine (DTaP) is recommended for children as a 3-dose primary series (2, 4, 6 months) followed by 2 booster doses (at 15-18 months and at 4-6 years). These 3 antigens are available as DTaP products solely or as part of vaccines that combine other antigens with DTaP (TABLE 3).^11,12 In addition, as a joint venture between Merck and Sanofi Pasteur, a new pediatric hexavalent vaccine containing DTaP5, polio, Haemophilus influenzae type b, and hepatitis B antigens is now available to be given at ages 2, 4, and 6 months.¹²

Tetanus toxoid, reduced diphtheria toxoid, and acellular pertussis (Tdap) vaccine is recommended for adolescents ages 11 to 12 years.¹¹ It is also recommended once for adults who have not previously received it. The exception to the single Tdap dose for adults is during pregnancy; it is recommended as a single dose during each pregnancy regardless of the previous number of Tdap doses received.¹¹

A booster dose of meningococcal-B vaccine is indicated for individuals still at increased risk 1 year after completing the MenB primary series.

Td is recommended every 10 years after Tdap given at ages 11 to 12, for protection against tetanus and diphtheria. Tdap can be substituted for one of these decennial Td boosters. Tdap can also be substituted for Td for tetanus prophylaxis after a patient sustains a wound.¹¹ The recommended single dose of Tdap for adolescents/adults also can be administered as part of a catch-up 3-dose Td series in previously unvaccinated adolescents and adults.

Continue to: It has become common...

It has become common practice throughout the country to substitute Tdap for Td when Td is indicated, even if Tdap has been received previously. ACIP looked at the safety of repeated doses of Tdap and found no safety concerns. For practicality, ACIP voted to recommend either Td or Tdap for these situations: the decennial booster, when tetanus prophylaxis is indicated in wound management, and when catch-up is needed in previously unvaccinated or inadequately vaccinated individuals who are 7 years of age and older. The resulting increase in the number of Tdap doses is not expected to have a major impact on the incidence of pertussis.¹³

Additional recommendations

Recommendations for preventing influenza in the 2019-2020 season are discussed in a previous Practice Alert.¹⁴

In 2019, ACIP also changed a previous recommendation on the routine use of 13-valent pneumococcal conjugate vaccine (PCV13) in adults ≥ 65 years. The new recommendation, covered in another Practice Alert, states that PCV13 should be used in immunocompetent adults ≥ 65 years only after individual clinical decision making.¹⁵

ACIP also changed its recommendations pertaining to human papillomavirus (HPV) vaccine. Catch-up vaccination is now recommended for all individuals through age 26 years. Previously catch up was recommended only for women and for men who have sex with men. And, even though use of HPV vaccine has been approved by the US Food and Drug Administration for adults ages 27 to 45 years, ACIP did not recommend its routine use in this age group but instead recommended it only after individual clinical decision making.^16,17

Every year the Advisory Committee on Immunization Practices (ACIP) updates the recommended immunization schedules for children/adolescents and adults on the Web site of the Centers for Disease Control and Prevention (www.cdc.gov/vaccines/schedules/hcp/index.html). The schedules for 2020 reflect additions and changes adopted by ACIP in 2019 and are discussed in this Practice Alert.

Hepatitis A: New directives on homelessness, HIV, and vaccine catch-up

Hepatitis A (HepA) vaccination is recommended for children ages 12 to 23 months, and for those at increased risk for hepatitis A virus (HAV) infection or for complications from HAV infection (TABLE 1).^1-3 Routine vaccination is either 2 doses of HepA given 6 months apart or a 3-dose schedule of combined hepatitis A and B vaccine (Twinrix). Vaccines licensed in the United States for the prevention of HAV infection are listed in TABLE 2.¹

ACIP recently added homeless individuals to the list of those who should receive HepA vaccine.⁴ This step was taken in response to numerous outbreaks among those who are homeless or who use illicit drugs. These outbreaks have increased rates of HAV infection overall as well as rates of hospitalization (71%) and death (3%) among those infected.⁵ Concern about a homeless individual’s ability to complete a 2- or 3-dose series should not preclude initiating HepA vaccination; even 1 dose achieves protective immunity in 94% to 100% of those who have intact immune systems.²

At its June 2019 meeting, ACIP made 2 other additions to its recommendations regarding HepA vaccination.¹ First, those infected with the human immunodeficiency virus (HIV) are now among the individuals who should receive HepA vaccine. Those who are HIV-positive and ≥ 1 year old were recommended for HepA vaccination because they often have one of the other risks for HAV infection and have higher rates of complications and prolonged infections if they contract HAV.¹ Second, catch-up HepA vaccination is indicated for children and adolescents ages 2 through 18 years who have not been previously vaccinated.¹Also at the June 2019 meeting, the safety of HepA vaccination during pregnancy was confirmed. ACIP recommends HepA vaccine for any pregnant woman not previously vaccinated who is at risk for HAV infection or for a severe outcome from HAV infection.¹

Japanese encephalitis: Vaccination can be accelerated

Japanese encephalitis (JE) is a serious mosquito-borne vaccine-preventable infection endemic to most of Asia and parts of the western Pacific. Most travelers to countries with endemic JE are at low risk of infection. But risk increases with prolonged visits to these areas and particularly during the JE virus transmission season (summer/fall in temperate areas; year-round in tropical climates). Risk is also heightened by traveling to, or living in, rural Asian areas, by participating in extensive outdoor activities, and by staying in accommodations without air-conditioning, screens, or bed nets.⁶

The only JE vaccine licensed in the United States is JE-VC (Ixiaro), manufactured by Valneva Austria GmbH. It is approved for use in children ≥ 2 months and adults. It requires a 2-dose series with 28 days between doses, and a booster after 1 year. ACIP recently approved an accelerated schedule for adults ages 18 to 65 years that allows the second dose to be administered as early as 7 days after the first. A full description of the epidemiology of JE and ACIP recommendations regarding ­JE-VC were published in July 2019.⁶

Meningococcal B vaccine booster doses recommended

Meningococcal B (MenB) vaccine is recommended for individuals ≥ 10 years old who are at increased risk of meningococcal infection, including those with complement deficiency, complement inhibitor use, or asplenia; microbiologists; and individuals exposed during an outbreak.⁷ It is also recommended for those ages 16 to 23 years who desire vaccination after individual clinical decision making.⁸

Continue to: Two MenB vaccines...

Consider HepA vaccine for any pregnant woman not previously vaccinated who is at risk for hepatitis A virus infection.

Two MenB vaccines are available in the United States: MenB-FHbp (Trumenba, ­Wyeth Pharmaceuticals, Inc.) and MenB-4C (Bexsero, GlaxoSmithKline). Either MenB vaccine can be used; however, they are not interchangeable and the same product must be used for all doses an individual receives. MenB-FHbp is licensed as a 3-dose series given at 0, 1-2, and 6 months, or as a 2-dose series given at 0 and 6 months. ACIP recommends the 3-dose schedule for individuals at increased risk for meningococcal disease or for use during community outbreaks of serogroup B meningococcal disease.⁹ For healthy adolescents who are not at increased risk for meningococcal disease, ACIP recommends using the 2-dose schedule of MenB-FHbp.⁹ MenB-4C is licensed as a 2-dose series, with doses administered at least 1 month apart.

At the June 2019 meeting, ACIP voted to recommend a MenB booster dose for those who are still at increased risk 1 year following completion of a MenB primary series, followed by booster doses every 2 to 3 years thereafter for as long as increased risk remains. This recommendation was made because of a rapid waning of immunity following the primary series and subsequent booster doses. A booster dose was not recommended for those who choose to be vaccinated after clinical decision making unless they are exposed during an outbreak and it has been at least a year since they received the primary series. An interval of 6 months for the booster can be considered, depending on the outbreak situation.¹⁰

A new DTaP product, and substituting Tdap for Td is approved

Diphtheria and tetanus toxoids and acellular pertussis vaccine (DTaP) is recommended for children as a 3-dose primary series (2, 4, 6 months) followed by 2 booster doses (at 15-18 months and at 4-6 years). These 3 antigens are available as DTaP products solely or as part of vaccines that combine other antigens with DTaP (TABLE 3).^11,12 In addition, as a joint venture between Merck and Sanofi Pasteur, a new pediatric hexavalent vaccine containing DTaP5, polio, Haemophilus influenzae type b, and hepatitis B antigens is now available to be given at ages 2, 4, and 6 months.¹²

Tetanus toxoid, reduced diphtheria toxoid, and acellular pertussis (Tdap) vaccine is recommended for adolescents ages 11 to 12 years.¹¹ It is also recommended once for adults who have not previously received it. The exception to the single Tdap dose for adults is during pregnancy; it is recommended as a single dose during each pregnancy regardless of the previous number of Tdap doses received.¹¹

A booster dose of meningococcal-B vaccine is indicated for individuals still at increased risk 1 year after completing the MenB primary series.

Td is recommended every 10 years after Tdap given at ages 11 to 12, for protection against tetanus and diphtheria. Tdap can be substituted for one of these decennial Td boosters. Tdap can also be substituted for Td for tetanus prophylaxis after a patient sustains a wound.¹¹ The recommended single dose of Tdap for adolescents/adults also can be administered as part of a catch-up 3-dose Td series in previously unvaccinated adolescents and adults.

Continue to: It has become common...

It has become common practice throughout the country to substitute Tdap for Td when Td is indicated, even if Tdap has been received previously. ACIP looked at the safety of repeated doses of Tdap and found no safety concerns. For practicality, ACIP voted to recommend either Td or Tdap for these situations: the decennial booster, when tetanus prophylaxis is indicated in wound management, and when catch-up is needed in previously unvaccinated or inadequately vaccinated individuals who are 7 years of age and older. The resulting increase in the number of Tdap doses is not expected to have a major impact on the incidence of pertussis.¹³

Additional recommendations

Recommendations for preventing influenza in the 2019-2020 season are discussed in a previous Practice Alert.¹⁴

In 2019, ACIP also changed a previous recommendation on the routine use of 13-valent pneumococcal conjugate vaccine (PCV13) in adults ≥ 65 years. The new recommendation, covered in another Practice Alert, states that PCV13 should be used in immunocompetent adults ≥ 65 years only after individual clinical decision making.¹⁵

ACIP also changed its recommendations pertaining to human papillomavirus (HPV) vaccine. Catch-up vaccination is now recommended for all individuals through age 26 years. Previously catch up was recommended only for women and for men who have sex with men. And, even though use of HPV vaccine has been approved by the US Food and Drug Administration for adults ages 27 to 45 years, ACIP did not recommend its routine use in this age group but instead recommended it only after individual clinical decision making.^16,17

Every year the Advisory Committee on Immunization Practices (ACIP) updates the recommended immunization schedules for children/adolescents and adults on the Web site of the Centers for Disease Control and Prevention (www.cdc.gov/vaccines/schedules/hcp/index.html). The schedules for 2020 reflect additions and changes adopted by ACIP in 2019 and are discussed in this Practice Alert.

Hepatitis A: New directives on homelessness, HIV, and vaccine catch-up

Hepatitis A (HepA) vaccination is recommended for children ages 12 to 23 months, and for those at increased risk for hepatitis A virus (HAV) infection or for complications from HAV infection (TABLE 1).^1-3 Routine vaccination is either 2 doses of HepA given 6 months apart or a 3-dose schedule of combined hepatitis A and B vaccine (Twinrix). Vaccines licensed in the United States for the prevention of HAV infection are listed in TABLE 2.¹

ACIP recently added homeless individuals to the list of those who should receive HepA vaccine.⁴ This step was taken in response to numerous outbreaks among those who are homeless or who use illicit drugs. These outbreaks have increased rates of HAV infection overall as well as rates of hospitalization (71%) and death (3%) among those infected.⁵ Concern about a homeless individual’s ability to complete a 2- or 3-dose series should not preclude initiating HepA vaccination; even 1 dose achieves protective immunity in 94% to 100% of those who have intact immune systems.²

At its June 2019 meeting, ACIP made 2 other additions to its recommendations regarding HepA vaccination.¹ First, those infected with the human immunodeficiency virus (HIV) are now among the individuals who should receive HepA vaccine. Those who are HIV-positive and ≥ 1 year old were recommended for HepA vaccination because they often have one of the other risks for HAV infection and have higher rates of complications and prolonged infections if they contract HAV.¹ Second, catch-up HepA vaccination is indicated for children and adolescents ages 2 through 18 years who have not been previously vaccinated.¹Also at the June 2019 meeting, the safety of HepA vaccination during pregnancy was confirmed. ACIP recommends HepA vaccine for any pregnant woman not previously vaccinated who is at risk for HAV infection or for a severe outcome from HAV infection.¹

Japanese encephalitis: Vaccination can be accelerated

Japanese encephalitis (JE) is a serious mosquito-borne vaccine-preventable infection endemic to most of Asia and parts of the western Pacific. Most travelers to countries with endemic JE are at low risk of infection. But risk increases with prolonged visits to these areas and particularly during the JE virus transmission season (summer/fall in temperate areas; year-round in tropical climates). Risk is also heightened by traveling to, or living in, rural Asian areas, by participating in extensive outdoor activities, and by staying in accommodations without air-conditioning, screens, or bed nets.⁶

The only JE vaccine licensed in the United States is JE-VC (Ixiaro), manufactured by Valneva Austria GmbH. It is approved for use in children ≥ 2 months and adults. It requires a 2-dose series with 28 days between doses, and a booster after 1 year. ACIP recently approved an accelerated schedule for adults ages 18 to 65 years that allows the second dose to be administered as early as 7 days after the first. A full description of the epidemiology of JE and ACIP recommendations regarding ­JE-VC were published in July 2019.⁶

Meningococcal B vaccine booster doses recommended

Meningococcal B (MenB) vaccine is recommended for individuals ≥ 10 years old who are at increased risk of meningococcal infection, including those with complement deficiency, complement inhibitor use, or asplenia; microbiologists; and individuals exposed during an outbreak.⁷ It is also recommended for those ages 16 to 23 years who desire vaccination after individual clinical decision making.⁸

Continue to: Two MenB vaccines...

Consider HepA vaccine for any pregnant woman not previously vaccinated who is at risk for hepatitis A virus infection.

Two MenB vaccines are available in the United States: MenB-FHbp (Trumenba, ­Wyeth Pharmaceuticals, Inc.) and MenB-4C (Bexsero, GlaxoSmithKline). Either MenB vaccine can be used; however, they are not interchangeable and the same product must be used for all doses an individual receives. MenB-FHbp is licensed as a 3-dose series given at 0, 1-2, and 6 months, or as a 2-dose series given at 0 and 6 months. ACIP recommends the 3-dose schedule for individuals at increased risk for meningococcal disease or for use during community outbreaks of serogroup B meningococcal disease.⁹ For healthy adolescents who are not at increased risk for meningococcal disease, ACIP recommends using the 2-dose schedule of MenB-FHbp.⁹ MenB-4C is licensed as a 2-dose series, with doses administered at least 1 month apart.

At the June 2019 meeting, ACIP voted to recommend a MenB booster dose for those who are still at increased risk 1 year following completion of a MenB primary series, followed by booster doses every 2 to 3 years thereafter for as long as increased risk remains. This recommendation was made because of a rapid waning of immunity following the primary series and subsequent booster doses. A booster dose was not recommended for those who choose to be vaccinated after clinical decision making unless they are exposed during an outbreak and it has been at least a year since they received the primary series. An interval of 6 months for the booster can be considered, depending on the outbreak situation.¹⁰

A new DTaP product, and substituting Tdap for Td is approved

Diphtheria and tetanus toxoids and acellular pertussis vaccine (DTaP) is recommended for children as a 3-dose primary series (2, 4, 6 months) followed by 2 booster doses (at 15-18 months and at 4-6 years). These 3 antigens are available as DTaP products solely or as part of vaccines that combine other antigens with DTaP (TABLE 3).^11,12 In addition, as a joint venture between Merck and Sanofi Pasteur, a new pediatric hexavalent vaccine containing DTaP5, polio, Haemophilus influenzae type b, and hepatitis B antigens is now available to be given at ages 2, 4, and 6 months.¹²

Tetanus toxoid, reduced diphtheria toxoid, and acellular pertussis (Tdap) vaccine is recommended for adolescents ages 11 to 12 years.¹¹ It is also recommended once for adults who have not previously received it. The exception to the single Tdap dose for adults is during pregnancy; it is recommended as a single dose during each pregnancy regardless of the previous number of Tdap doses received.¹¹

A booster dose of meningococcal-B vaccine is indicated for individuals still at increased risk 1 year after completing the MenB primary series.

Td is recommended every 10 years after Tdap given at ages 11 to 12, for protection against tetanus and diphtheria. Tdap can be substituted for one of these decennial Td boosters. Tdap can also be substituted for Td for tetanus prophylaxis after a patient sustains a wound.¹¹ The recommended single dose of Tdap for adolescents/adults also can be administered as part of a catch-up 3-dose Td series in previously unvaccinated adolescents and adults.

Continue to: It has become common...

It has become common practice throughout the country to substitute Tdap for Td when Td is indicated, even if Tdap has been received previously. ACIP looked at the safety of repeated doses of Tdap and found no safety concerns. For practicality, ACIP voted to recommend either Td or Tdap for these situations: the decennial booster, when tetanus prophylaxis is indicated in wound management, and when catch-up is needed in previously unvaccinated or inadequately vaccinated individuals who are 7 years of age and older. The resulting increase in the number of Tdap doses is not expected to have a major impact on the incidence of pertussis.¹³

Additional recommendations

Recommendations for preventing influenza in the 2019-2020 season are discussed in a previous Practice Alert.¹⁴

In 2019, ACIP also changed a previous recommendation on the routine use of 13-valent pneumococcal conjugate vaccine (PCV13) in adults ≥ 65 years. The new recommendation, covered in another Practice Alert, states that PCV13 should be used in immunocompetent adults ≥ 65 years only after individual clinical decision making.¹⁵

ACIP also changed its recommendations pertaining to human papillomavirus (HPV) vaccine. Catch-up vaccination is now recommended for all individuals through age 26 years. Previously catch up was recommended only for women and for men who have sex with men. And, even though use of HPV vaccine has been approved by the US Food and Drug Administration for adults ages 27 to 45 years, ACIP did not recommend its routine use in this age group but instead recommended it only after individual clinical decision making.^16,17