Abstract and Introduction
Introduction
The Advisory Committee on Immunization Practices (ACIP) recommends routine vaccination of persons aged 11–12 years with human papillomavirus (HPV) vaccine, quadrivalent meningococcal conjugate vaccine (MenACWY), and tetanus and reduced diphtheria toxoids and acellular pertussis vaccine (Tdap). A booster dose of MenACWY is recommended at age 16 years,[1] and catch-up vaccination is recommended for hepatitis B vaccine (HepB), measles, mumps, and rubella vaccine (MMR), and varicella vaccine (VAR) for adolescents whose childhood vaccinations are not up to date (UTD).[1] ACIP also recommends that clinicians may administer a serogroup B meningococcal vaccine (MenB) series to adolescents and young adults aged 16–23 years, with a preferred age of 16–18 years.[2] To estimate U.S. adolescent vaccination coverage, CDC analyzed data from the 2017 National Immunization Survey–Teen (NIS-Teen) for 20,949 adolescents aged 13–17 years.* During 2016–2017, coverage increased for ≥1 dose of HPV vaccine (from 60.4% to 65.5%), ≥1 dose of MenACWY (82.2% to 85.1%), and ≥2 doses of MenACWY (39.1% to 44.3%). Coverage with Tdap remained stable at 88.7%. In 2017, 48.6% of adolescents were UTD with the HPV vaccine series (HPV UTD) compared with 43.4% in 2016.† On-time vaccination (receipt of ≥2 or ≥3 doses of HPV vaccine by age 13 years) also increased. As in 2016, ≥1-dose HPV vaccination coverage was lower among adolescents living in nonmetropolitan statistical areas (MSAs) (59.3%) than among those living in MSA principal cities (70.1%).§ Although HPV vaccination initiation remains lower than coverage with MenACWY and Tdap, HPV vaccination coverage has increased an average of 5.1 percentage points annually since 2013, indicating that continued efforts to target unvaccinated teens and eliminate missed vaccination opportunities might lead to HPV vaccination coverage levels comparable to those of other routinely recommended adolescent vaccines.
NIS-Teen is an annual survey that estimates vaccination coverage among adolescents aged 13–17 years in the 50 states, the District of Columbia (DC), selected local areas, and territories.¶ NIS-Teen is conducted among parents and guardians of eligible adolescents identified using a random-digit–dialed sample of landline and cellular telephone numbers.** Parents and guardians are interviewed by telephone about the sociodemographic characteristics of the adolescent and household. Contact information and consent to contact the teen's vaccination providers are requested. When more than one age-eligible adolescent lives in the household, one is randomly selected for participation. Vaccination providers identified during the interview are mailed a questionnaire requesting the vaccination history from the teen's medical record.†† Vaccination coverage estimates are based on provider-reported vaccination histories. This report summarizes national vaccination coverage for 20,949 adolescents (9,845 females [47%] and 11,104 males [53%]) aged 13–17 years with adequate provider data.§§
Data were weighted and analyzed to account for the complex sampling design of NIS-Teen. NIS-Teen methodology, including methods for weighting and synthesizing provider-reported vaccination histories, has been described previously.[3] T-tests were used to assess vaccination coverage differences between 2017 and 2016 and between demographic subgroups (i.e., age, health insurance status, MSA status, race/ethnicity, and poverty level). Weighted linear regression by survey year was used to estimate annual percentage point changes in coverage. Trends in HPV vaccination initiation and HPV UTD status by year of birth were assessed using combined data from 2016 and 2017 NIS-Teen; p-values <0.05 were considered statistically significant.
Morbidity and Mortality Weekly Report. 2018;67(33):909-917. © 2018 Centers for Disease Control and Prevention (CDC)
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