Literature DB >> 23985496

National and state vaccination coverage among adolescents aged 13-17 years--United States, 2012.

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Abstract

At ages 11 through 12 years, the Advisory Committee on Immunization Practices (ACIP) recommends that preteens receive 1 dose of tetanus, diphtheria, and acellular pertussis (Tdap) vaccine, 1 dose of meningococcal conjugate (MenACWY) vaccine, and 3 doses of human papillomavirus (HPV) vaccine. ACIP recommends administration of all age-appropriate vaccines during a single visit. ACIP also recommends that pre-teens and older adolescents receive an annual influenza vaccine as well as any overdue vaccines (e.g., varicella). To monitor vaccination coverage among persons aged 13-17 years, CDC analyzed data from the National Immunization Survey-Teen (NIS-Teen). This report highlights findings of that analysis. From 2011 to 2012, coverage increased for ≥1 Tdap vaccine dose (from 78.2% to 84.6%), ≥1 MenACWY vaccine dose (from 70.5% to 74.0%) and, among males, ≥1 HPV vaccine dose (from 8.3% to 20.8%). Among females, vaccination coverage estimates for each HPV vaccine series dose were similar in 2012 compared with 2011. Coverage varied substantially among states. Regarding Healthy People 2020 targets for adolescents, 36 states achieved targets for Tdap, 12 for MenACWY, and nine for varicella vaccine coverage. Large and increasing coverage differences between Tdap and other vaccines recommended for adolescents indicate that substantial missed opportunities remain for vaccinating teens, especially against HPV infection. Health-care providers should administer recommended HPV and meningococcal vaccinations to boys and girls during the same visits when Tdap vaccine is given. In addition, whether for health problems or well-checks, providers, parents, and adolescents should use every health-care visit as an opportunity to review adolescents' immunization histories and ensure that every adolescent is fully vaccinated.

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Year:  2013        PMID: 23985496      PMCID: PMC4604993     

Source DB:  PubMed          Journal:  MMWR Morb Mortal Wkly Rep        ISSN: 0149-2195            Impact factor:   17.586


At ages 11 through 12 years, the Advisory Committee on Immunization Practices (ACIP) recommends that preteens receive 1 dose of tetanus, diphtheria, and acellular pertussis (Tdap) vaccine, 1 dose of meningococcal conjugate (MenACWY) vaccine,* and 3 doses of human papillomavirus (HPV) vaccine (1–3). ACIP recommends administration of all age-appropriate vaccines during a single visit (4). ACIP also recommends that pre-teens and older adolescents receive an annual influenza vaccine as well as any overdue vaccines (e.g., varicella) (1). To monitor vaccination coverage among persons aged 13–17 years,† CDC analyzed data from the National Immunization Survey–Teen (NIS-Teen). This report highlights findings of that analysis. From 2011 to 2012, coverage increased for ≥1 Tdap vaccine dose§ (from 78.2% to 84.6%), ≥1 MenACWY vaccine dose (from 70.5% to 74.0%) and, among males, ≥1 HPV vaccine dose (from 8.3% to 20.8%). Among females, vaccination coverage estimates for each HPV vaccine series dose were similar in 2012 compared with 2011. Coverage varied substantially among states. Regarding Healthy People 2020 targets for adolescents (5), 36 states achieved targets for Tdap, 12 for MenACWY, and nine for varicella vaccine coverage. Large and increasing coverage differences between Tdap and other vaccines recommended for adolescents indicate that substantial missed opportunities remain for vaccinating teens, especially against HPV infection (6). Health-care providers should administer recommended HPV and meningococcal vaccinations to boys and girls during the same visits when Tdap vaccine is given. In addition, whether for health problems or well-checks, providers, parents, and adolescents should use every health-care visit as an opportunity to review adolescents’ immunization histories and ensure that every adolescent is fully vaccinated. NIS-Teen identifies persons aged 13–17 years in the 50 states, the District of Columbia, selected areas,¶ and the U.S. Virgin Islands** using a random-digit–dialed sample of landline and, since 2011, cellular telephone numbers.†† Survey respondents are parents or guardians of teens aged 13–17 years who provide information about their children’s sociodemographic characteristics and vaccination providers. After receiving consent from respondents, questionnaires are mailed to all identified providers to obtain data from medical records, so that composite, provider-reported immunization histories can be analyzed.§§ In 2012, national estimates included 19,199 adolescents (9,058 females; 10,141 males).¶¶ Details regarding NIS-Teen methodology, including methods for synthesizing provider-reported immunization histories and weighting, have been described.*** T-tests were used to assess vaccination coverage differences by survey year, age, sex, race/ethnicity, and poverty status for all vaccines included in this report. Weighted linear regression was used to assess coverage trends for vaccines recommended routinely for adolescents since 2005–2006 (i.e., Tdap, MenACWY, and among females, HPV vaccine). Results were considered statistically significant at p<0.05.

National Vaccination Coverage

Vaccination coverage trends differ substantially for the three vaccines routinely recommended for adolescents since 2005–2006 (Figure). During 2006–2012, coverage for ≥1 Tdap vaccine dose and ≥1 MenACWY vaccine dose increased steadily, with annual average increases of approximately 12.0 (95% confidence interval [CI] = 9.9–14.0) and 10.1 (CI = 7.5–12.6) percentage points, respectively. Since 2009, the national estimate for ≥1 MenACWY vaccine dose has been lower than the estimate for ≥1 Tdap vaccine dose, and the difference in coverage between the two vaccines is widening (Figure). From 2011 to 2012, while ≥1 Tdap vaccine dose coverage increased 6.4 percentage points, coverage for ≥1 MenACWY vaccine dose increased only 3.5 percentage points. During 2007–2011, coverage for ≥1 HPV vaccine dose among females lagged behind estimates for Tdap and MenACWY vaccines, increasing on average 6.1 (CI = 3.3–8.9) percentage points each year. However, in 2011 and 2012, HPV vaccination rates among females did not increase (Figure, Table 1). Overall, HPV vaccination series completion among females was lower in 2012 compared with 2011.††† Compared with 2011 coverage rates, 2012 coverage estimates among males for HPV vaccine doses were higher (Figure, Table 1), but ≥1 dose coverage was lower (p<0.05) in 2012, the first survey year following the routine recommendation for males (3), than that achieved for females by 2007 (Figure) (7), the first survey year following licensure of the quadrivalent HPV vaccine for administration to females (2).
FIGURE

Estimated vaccination coverage with selected vaccines and doses among adolescents aged 13–17 years, by survey year — National Immunization Survey–Teen, United States, 2006–2012

Abbreviations: Tdap = tetanus toxoid, reduced diphtheria toxoid, and acellular pertussis; MenACWY = meningococcal conjugate; HPV = human papillomavirus; ACIP = Advisory Committee on Immunization Practices.

* ≥1 dose Tdap vaccine on or after age 10 years.

† ≥1 dose MenACWY vaccine.

§ HPV vaccine, either bivalent or quadrivalent, among females. ACIP recommends either bivalent or quadrivalent vaccine for females.

¶ HPV vaccine, either bivalent or quadrivalent, among males. ACIP recommends the quadrivalent vaccine for males; however, some males might have received bivalent vaccine.

TABLE 1

Estimated vaccination coverage with selected vaccines among adolescents aged 13–17* years, by age when interviewed — National Immunization Survey–Teen (NIS-Teen), United States, 2011–2012

Age when interviewed (yrs) — 2012Total


13 (n = 3,937)14 (n = 3,961)15 (n = 3,892)16 (n = 3,825)17 (n = 3,584)2012 (N = 19,199)2011 (N = 23,564)







Vaccine%(95% CI)%(95% CI)%(95% CI)%(95% CI)%(95% CI)%(95% CI)%(95% CI)
Tdap§ ≥1 dose85.3(±2.1)85.7(±2.1)84.9(±2.0)83.8(±2.1)83.3(±2.0) 84.6 (±0.9) 78.2 (±0.9)
MenACWY** ≥1 dose72.5(±2.6)73.4(±2.6)75.3(±2.4)74.6(±2.7)74.2(±2.7) 74.0 (±1.1) 70.5 (±1.0)
HPV†† vaccine coverage
 Females
   ≥1 dose46.8(±4.0)49.4(±4.2)53.9(±3.9)§§55.8(±4.4)§§64.2(±4.3)§§ 53.8 (±1.9) 53.0 (±1.7)
   ≥2 doses31.5(±3.5)36.8(±4.0)45.3(±3.8)§§47.4(±4.3)§§56.7(±4.6)§§ 43.4 (±1.9) 43.9 (±1.7)
   ≥3 doses20.2(±3.0)28.7(±3.8)§§35.3(±3.6)§§39.1(±4.0)§§44.5(±4.7)§§ 33.4 (±1.7) 34.8 (±1.6)
 Males
   ≥1 dose19.5(±3.1)22.2(±3.6)20.9(±3.3)21.2(±3.4)20.3(±3.6) 20.8 (±1.5) 8.3 (±1.0)
   ≥2 doses12.4(±2.7)13.0(±2.8)13.2(±2.9)12.9(±2.9)12.0(±2.8) 12.7 (±1.3) 3.8 (±0.7)
   ≥3 doses6.6(±1.8)5.9(±2.1)8.1(±2.5)6.0(±1.6)7.3(±2.5) 6.8 (±1.0) 1.3 (±0.3)
HPV†† 3-dose series completion¶¶
 Females49.9(±6.4)64.4(±6.9)§§68.9(±5.2)§§73.1(±4.7)§§72.4(±6.0)§§ 66.7 (±2.6) 70.7 (±2.3)
 Males47.9(±11.0)40.2(±11.6)48.3(±10.3)38.5(±9.8)50.3(±11.8) 45.1 (±5.0) 28.1 (±6.5)
MMR*** ≥2 doses91.2(±1.8)91.9(±1.9)92.0(±1.5)90.7(±1.7)91.1(±1.5) 91.4 (±0.8) 91.1 (±0.7)
Hepatitis B ≥3 doses 93.0(±1.6)93.6(±1.8)93.4(±1.4)91.6(±1.6)92.6(±1.4) 92.8 (±0.7) 92.3 (±0.7)
Varicella
 History of varicella disease†††20.5(±2.4)22.0(±2.2)31.1(±2.6)§§34.9(±2.7)§§45.1(±3.1)§§ 30.6 (±1.2) 36.6 (±1.1)
 Among adolescents with no history of disease
   ≥1 dose97.2(±1.0)95.0(±2.1)95.3(±1.5)§§93.3(±1.7)§§91.3(±2.1)§§ 94.7 (±0.8) 92.3 (±1.0)
   ≥2 doses78.9(±2.6)75.6(±3.1)75.8(±3.0)71.9(±3.4)§§70.6(±3.7)§§ 74.9 (±1.4) 68.3 (±1.4)
 History of disease or received ≥2 doses varicella vaccine83.2(±2.1)80.9(±2.5)83.3(±2.2)81.7(±2.3)83.9(±2.1) 82.6 (±1.0) 79.9 (±1.0)

Abbreviations: CI = confidence interval; Tdap = tetanus toxoid, reduced diphtheria toxoid, and acellular pertussis; MenACWY = meningococcal conjugate; HPV = human papillomavirus; MMR = measles, mumps, and rubella.

Adolescents (N = 19,199) in the 2012 NIS-Teen were born during January 6, 1994–February 18, 2000.

Estimates with 95% CI widths >20 might not be reliable.

Includes percentages receiving Tdap vaccine on or after age 10 years.

Statistically significant difference (p<0.05) compared with 2011 NIS-Teen overall estimates.

Includes percentages receiving MenACWY or meningococcal–unknown type vaccine.

HPV vaccine, either quadrivalent or bivalent. Percentage reported among females (n = 9,058) and males (n =10,141). Some adolescents might have received more than the recommended 3 doses of HPV vaccine.

Statistically significant difference (p<0.05) in estimated vaccination coverage by age; reference group was adolescents aged 13 years.

The completion rate for the 3-dose HPV vaccination series represents the percentage of adolescents who received 3 doses among those who had ≥1 HPV vaccine dose and ≥24 weeks between the first dose and the interview date. The calculation was limited to 4,548 females and 1,414 males who met the criteria of having received ≥1 HPV vaccine dose and having ≥24 weeks between the first dose and the interview date.

≥2 doses of MMR vaccine.

By parent/guardian report or provider records.

Among vaccines recommended for adolescents if not previously administered, coverage remained >90% for ≥2 MMR vaccine doses and ≥3 hepatitis B vaccine doses. Varicella vaccination coverage increased significantly for ≥1 and ≥2 doses (Table 1). What is already known on this topic? At ages 11 through 12 years, the Advisory Committee on Immunization Practices (ACIP) recommends that preteens receive 1 dose of tetanus, diphtheria, and acellular pertussis (Tdap) vaccine, 1 dose of meningococcal conjugate (MenACWY) vaccine, and 3 doses of human papillomavirus (HPV) vaccine. ACIP recommends administration of all age-appropriate vaccine doses during a single visit. During 2006–2011, national coverage for ≥1 Tdap vaccine dose and ≥1 MenACWY vaccine dose increased steadily, with Tdap vaccine coverage in 2011 reaching national target levels for adolescents. During 2007–2011, coverage for ≥1 HPV vaccine dose among females lagged behind estimates for Tdap and MenACWY vaccination. In 2011, ACIP recommended routine HPV vaccination for males. What is added by this report? From 2011 to 2012, vaccination coverage among U.S. adolescents increased to 84.6% for ≥1 dose of Tdap vaccine, 74.0% for ≥1 dose of MenACWY vaccine, and, among males, to 20.8% for ≥1 dose of HPV vaccine. At 53.8%, vaccination coverage for ≥1 dose of HPV vaccine among females in 2012 was statistically unchanged from 2011, and only one third of female teens received all 3 recommended doses of the HPV series. Vaccination coverage levels continued to vary widely among states. Although the difference in vaccination coverage between Tdap and MenACWY has been increasing since 2009, national progress toward achievement of Healthy People 2020 targets continues for Tdap and MenACWY vaccines. What are the implications for public health practice? Large and increasing coverage differences between Tdap and other vaccines recommended for adolescents show that many opportunities are being missed to vaccinate boys and girls, especially against HPV infection. Health-care providers should administer recommended HPV and meningococcal vaccinations to teens during the same visits when Tdap vaccine is given. Providers, parents, and adolescents also should use every health-care visit as an opportunity to review adolescents’ immunization histories and ensure that every adolescent is fully vaccinated.

Vaccination Coverage by Selected Characteristics

In 2012, vaccination coverage rates were similar across age groups for Tdap, MenACWY, HPV (among males), MMR, and hepatitis B vaccines (Table 1). Older teens had lower varicella ≥1 and ≥2 dose coverage than younger age groups. Among females, HPV vaccination coverage increased by an average of approximately 4–6 percentage points per year of age for ≥1, ≥2, ≥3 doses and series completion (p<0.05); however, even among females aged 17 years (the most highly vaccinated age group), only 44.5% had received ≥3 doses. In 2012, with the exception of HPV vaccination (Table 1), estimates were similar for both sexes for Tdap, MenACWY, MMR, hepatitis B, and varicella vaccination coverage measures. Tdap (≥1 dose) vaccination coverage was similar across poverty levels§§§ and racial/ethnic groups (Table 2). MenACWY (≥1 dose) vaccination coverage was similar across poverty levels; however, whites had lower coverage than other racial/ethnic groups. HPV vaccination coverage was higher for those living below poverty level for ≥1 and ≥2 doses among females and ≥1, ≥2, ≥3 doses among males; however, among females, series completion was higher among those living at or above poverty level. Compared with whites, HPV vaccination coverage rates for Hispanics were higher for ≥1 and ≥2 doses of vaccine among females and ≥1, ≥2, ≥3 doses among males. Among males, coverage for ≥1 and ≥2 HPV vaccine doses was higher for blacks compared with whites, but 3-dose series completion was lower. Among females, HPV vaccine series completion was lower for Hispanics and blacks compared with whites. Coverage for ≥2 doses MMR vaccine and ≥3 doses hepatitis B vaccine differed by poverty level and was lower for Hispanics compared with whites. Varicella vaccine coverage (≥2 doses) was lower for those living below the federal poverty level.
TABLE 2

Estimated vaccination coverage among adolescents aged 13–17 years,* by race/ethnicity,† poverty level,§ and selected vaccines and doses — National Immunization Survey–Teen (NIS-Teen), United States, 2012

Race/EthnicityPoverty status


White (n = 12,930)Black (n = 1,928)Hispanic (n = 2,552)American Indian/Alaska Native (n = 261)Asian (n = 622)Multiracial (n = 840)Below poverty level (n = 3,136)At or above poverty level (n = 15,466)








Vaccine%(95% CI)%(95% CI)%(95% CI)%(95% CI)%(95% CI)%(95% CI)%(95% CI)%(95% CI)
Tdap** ≥1 dose84.4(±1.0)83.7(±2.5)85.4(±2.5)89.5(±5.6)84.9(±5.4)85.5(±4.7)83.6(±2.1)85.1(±1.0)
MenACWY†† ≥1 dose71.3(±1.3)75.8(±3.2)§§77.6(±3.2)§§82.0(±7.9)§§79.4(±6.4)§§77.9(±4.7)§§73.2(±2.7)74.1(±1.3)
HPV¶¶ coverage by dose
Females
 ≥1 dose51.1(±2.1)50.1(±5.4)62.9(±4.9)§§67.7(±15.5)§§55.9(±10.9)49.9(±9.0)64.9(±4.2)§§50.4(±2.0)
 ≥2 doses41.8(±2.1)39.5(±5.1)49.3(±5.1)§§43.2(±17.7)48.1(±11.1)41.3(±8.7)51.5(±4.4)§§40.7(±2.0)
 ≥3 doses33.7(±2.0)29.0(±4.7)35.5(±4.8)36.8(±16.5)33.8(±10.2)32.1(±8.1)36.2(±4.2)32.5(±1.9)
Males
 ≥1 dose15.2(±1.4)25.9(±4.6)§§31.7(±4.7)§§24.9(±12.0)22.3(±8.7)20.7(±6.4)29.9(±3.9)§§17.3(±1.5)
 ≥2 doses9.0(±1.1)15.6(±3.8)§§20.1(±4.1)§§NANA17.1(±7.8)§§10.3(±4.0)18.8(±3.4)§§10.2(±1.2)
 ≥3 doses4.6(±0.8)5.4(±1.9)12.9(±3.5)§§NANANANA5.4(±3.0)10.7(±2.9)§§5.5(±0.9)
HPV¶¶ 3-dose series completion***
 Females71.8(±2.7)63.7(±7.1)§§59.3(±6.8)§§55.4(±27.4)61.8(±15.8)67.8(±11.3)59.3(±5.8)§§69.9(±2.7)
 Males45.2(±6.2)27.8(±9.2)§§52.1(±10.3)NANA62.7(±23.6)38.2(±19.2)43.6(±9.1)47.2(±5.6)
MMR†††2 doses92.4(±0.8)91.4(±2.3)89.1(±2.2)§§95.9(±4.2)90.4(±4.6)90.4(±3.7)89.7(±1.9)§§92.0(±0.8)
Hepatitis B ≥3 doses 93.7(±0.7)92.5(±2.1)91.1(±2.1)§§94.1(±5.8)92.0(±3.8)92.0(±3.3)91.3(±1.7)§§93.3(±0.8)
Varicella
 History of varicella disease§§§32.4(±1.3)27.2(±3.3)§§29.1(±3.2)38.0(±10.8)25.9(±7.1)28.8(±5.2)30.7(±2.7)30.5(±1.3)
 Among adolescents with no history of disease
  ≥1 dose95.3(±0.8)93.3(±2.5)94.1(±2.1)95.2(±6.9)93.5(±4.4)95.5(±2.9)92.5(±2.0)§§95.3(±0.8)
  ≥2 doses74.0(±1.7)75.2(±3.9)76.3(±3.5)78.4(±11.8)79.4(±8.0)75.1(±6.3)72.0(±3.3)§§75.8(±1.5)
 History of disease or received ≥2 doses varicella vaccine82.4(±1.2)81.9(±3.0)83.2(±2.6)86.6(±7.2)84.7(±6.2)82.3(±4.6)80.6(±2.4)83.2(±1.1)

Abbreviations: CI = confidence interval; Tdap = tetanus toxoid, reduced diphtheria toxoid, and acellular pertussis; MenACWY = meningococcal conjugate; HPV = human papillomavirus; NA = not available (estimate not reported because unweighted sample size for the denominator was <30 or 95% CI half width/estimate >0.6); MMR = measles, mumps, and rubella.

Adolescents (N = 19,199) in the 2012 NIS-Teen were born during January 6, 1994–February 18, 2000.

Adolescent’s race/ethnicity was reported by their parent or guardian. Adolescents identified in this report as white, black, Asian, American Indian/Alaska Native or multiracial were reported by the parent or guardian as non-Hispanic. Adolescents identified as multiracial had more than one race category selected. Adolescents identified as Hispanic might be of any race. Native Hawaiian or other Pacific Islanders were not included in the table because of small sample sizes.

Adolescents were classified as below poverty level if their total family income was less than the federal poverty level specified for the applicable family size and number of children aged <18 years. All others were classified as at or above the poverty level. Additional information available at http://www.census.gov/hhes/www/poverty.html. Poverty status was unknown for 597 adolescents.

Estimates with 95% CI widths >20 might not be reliable.

Includes percentages receiving Tdap vaccine on or after age 10 years.

Includes percentages receiving MenACWY and meningococcal–unknown type vaccine.

Statistically significant difference (p<0.05) in estimated vaccination coverage by race/ethnicity or poverty level; referent groups were white, non-Hispanic adolescents and adolescents living at or above poverty level, respectively.

HPV vaccine, either quadrivalent or bivalent. Percentage reported among females (n = 9,058) and males (n = 10,141). Some adolescents might have received more than the 3 recommended HPV vaccine doses.

The completion rate for the 3-dose HPV vaccination series represents the percentage of adolescents who received 3 doses among those who had ≥1 HPV vaccine dose and ≥24 weeks between the first dose and the interview date. The calculation was limited to 4,548 females and 1,414 males who met the criteria of having received ≥1 HPV vaccine dose and having ≥24 weeks between the first dose and the interview date.

Includes ≥2 doses of MMR vaccine.

By parent/guardian report or provider records.

State Vaccination Coverage

Coverage estimates for Tdap, MenACWY, and HPV vaccines varied widely among states. Coverage for ≥1 Tdap vaccine dose ranged from 53.5% (Mississippi) to 96.3% (New Hampshire), and for ≥1 MenACWY vaccine dose, from 37.5% (Arkansas) to 94.3% (Rhode Island) (Table 3). Among females, coverage for ≥1 HPV vaccine dose varied from 39.4% (Florida) to 73.7% (Rhode Island), and for ≥3 HPV vaccine doses, from 12.1% (Mississippi) to 57.7% (Rhode Island). Among males, coverage for ≥1 HPV vaccine dose ranged from 11.2% (Wyoming) to 55.2% (Rhode Island). Regionally, vaccination coverage was highest overall in the Northeast (Table 3). Among males, vaccination coverage estimates for each HPV vaccine series dose and HPV series completion were similar across regions.
TABLE 3

Estimated vaccination coverage with selected vaccines and doses* among adolescents aged 13–17 years,† by state/area — National Immunization Survey–Teen (NIS-Teen), United States, 2012

Females (N = 9,058)Males (N = 10,141)


≥2 VAR§≥1 Tdap≥1 MenACWY**≥1 HPV††≥2 HPV§§≥3 HPV¶¶≥1 HPV††≥2 HPV§§≥3 HPV¶¶









State/Area%(95% CI)***%(95% CI)%(95% CI)%(95% CI)%(95% CI)%(95% CI)%(95% CI)%(95% CI)%(95% CI)
United States overall 74.9 (±1.4) ††† 84.6 (±0.9) ††† 74.0 (±1.1) ††† 53.8 (±1.9) 43.4 (±1.9) 33.4 (±1.7) 20.8 (±1.5) ††† 12.7 (±1.3) ††† 6.8 (±1.0) †††
Northeast 82.0(±2.5)†††90.5(±1.5)†††85.3(±1.8)†††58.2(±3.7)51.4(±3.7)40.4(±3.7)21.2(±2.8)†††12.8(±2.3)†††6.4(±1.7)†††
 Connecticut93.5(±4.3)89.3(±4.8)88.8(±3.7)†††57.6(±10.3)53.9(±10.4)43.6(±10.5)20.3(±6.7)14.6(±6.0)8.5(±4.6)
 Maine75.6(±7.4)79.5(±5.9)†††73.7(±6.1)†††61.7(±9.4)53.4(±9.7)41.8(±9.6)25.3(±7.9)17.4(±7.0)12.1(±6.2)
 Massachusetts88.8(±4.7)95.7(±2.4)89.2(±3.7)69.3(±7.9)58.9(±8.9)43.0(±9.1)25.5(±7.9)10.4(±5.0)NANA
 New Hampshire92.9(±3.9)96.3(±2.2)83.1(±5.6)52.2(±10.6)§§§43.6(±10.4)34.5(±9.7)20.5(±7.3)12.2(±5.5)NANA
 New Jersey73.8(±7.2)90.9(±4.0)†††91.6(±3.9)54.6(±9.7)44.9(±9.7)31.6(±8.5)19.8(±7.9)10.7(±5.6)NANA
 New York74.4(±5.1)90.3(±2.9)78.5(±4.1)56.0(±7.1)†††50.5(±7.2)39.7(±7.2)17.9(±5.1)†††12.3(±4.6)NANA
  City of New York70.2(±7.5)86.4(±4.5)75.3(±5.8)53.6(±8.9)49.0(±9.0)37.3(±8.9)27.3(±9.5)†††19.2(±8.7)NANA
  Rest of state77.1(±6.9)92.7(±3.8)80.5(±5.5)†††57.5(±10.2)†††51.4(±10.3)†††41.3(±10.3)12.1(±5.5)NANANANA
 Pennsylvania90.4(±4.3)88.4(±3.4)†††89.4(±3.6)†††57.4(±8.0)52.1(±8.2)44.6(±8.2)21.9(±6.0)†††13.2(±4.8)5.3(±2.8)
  Philadelphia County90.0(±4.7)†††87.2(±4.7)92.9(±3.7)76.2(±8.2)68.5(±9.3)51.9(±10.3)46.7(±9.8)†††27.5(±9.0)†††NANA
  Rest of state90.4(±4.8)88.6(±3.8)†††88.9(±4.0)55.0(±9.0)50.0(±9.2)43.6(±9.2)18.8(±6.6)†††11.4(±5.3)NANA
 Rhode Island93.3(±3.8)†††94.0(±2.9)†††94.3(±2.9)†††73.7(±9.4)67.8(±9.8)57.7(±10.0)55.2(±9.2)†††34.8(±8.7)†††17.7(±6.3)
 Vermont92.4(±3.8)†††93.1(±3.6)72.6(±6.1)66.4(±9.0)58.0(±9.3)46.2(±9.6)25.7(±8.2)19.4(±7.8)10.6(±5.6)
Midwest 72.9(±2.7)82.9(±2.0)†††71.9(±2.2)50.5(±3.5)39.4(±3.4)31.1(±3.2)18.1(±2.7)†††10.7(±2.1)†††5.4(±1.7)†††
 Illinois63.4(±7.2)77.3(±5.4)67.7(±6.0)41.2(±8.5)28.5(±7.7)§§§21.1(±6.3)§§§24.3(±7.8)†††15.0(±6.8)†††NANA
  City of Chicago72.2(±8.2)78.5(±6.1)†††77.0(±6.2)61.4(±10.4)†††44.5(±11.0)37.8(±10.8)40.2(±10.5)27.8(±10.1)17.0(±9.3)
  Rest of state60.9(±8.9)77.0(±6.5)65.4(±7.2)36.2(±10.1)§§§24.5(±9.1)§§§16.9(±7.3)§§§20.5(±9.4)NANANANA
 Indiana84.8(±6.7)94.4(±3.0)92.0(±3.8)48.4(±9.9)42.7(±9.7)35.2(±9.1)17.2(±7.4)10.8(±5.9)NANA
 Iowa62.1(±8.5)77.8(±5.9)64.4(±6.7)57.5(±9.6)46.4(±9.8)35.6(±9.3)19.4(±7.8)13.5(±6.4)NANA
 Kansas78.7(±7.0)†††92.2(±3.3)†††55.9(±7.3)42.7(±10.5)32.8(±9.8)25.1(±9.3)13.5(±6.9)11.1(±6.5)NANA
 Michigan87.4(±5.0)84.2(±4.8)†††87.5(±4.2)†††48.1(±9.7)39.2(±9.6)32.2(±9.3)13.1(±6.9)NANANANA
 Minnesota82.9(±6.6)85.6(±6.1)66.6(±6.8)59.4(±10.3)46.0(±10.7)33.1(±9.9)15.2(±7.6)NANANANA
 Missouri53.6(±9.7)88.0(±4.8)†††58.3(±7.6)51.6(±10.5)40.4(±10.1)34.5(±9.7)21.7(±9.9)NANANANA
 Nebraska82.2(±6.4)81.4(±5.8)75.5(±6.1)67.5(±10.0)58.3(±10.7)†††37.3(±10.0)19.6(±6.9)11.6(±5.0)7.0(±3.7)
 North Dakota68.6(±8.9)89.5(±5.0)88.1(±4.9)60.3(±9.8)49.7(±10.0)40.9(±9.6)18.6(±7.4)13.1(±6.8)NANA
 Ohio62.0(±8.8)73.8(±6.7)66.4(±6.9)56.4(±10.4)39.5(±10.7)31.9(±10.5)15.2(±6.7)6.9(±3.9)NANA
 South Dakota43.7(±9.0)65.9(±6.5)40.0(±6.8)51.0(±10.1)46.5(±10.1)31.8(±9.3)§§§19.8(±8.2)10.7(±6.1)NANA
 Wisconsin87.9(±5.4)89.8(±4.4)74.4(±6.2)50.5(±10.8)§§§45.0(±10.7)§§§37.5(±10.5)19.3(±8.0)10.3(±5.8)NANA
South 73.3(±2.1)†††81.2(±1.5)†††71.0(±1.8)†††48.9(±2.9)39.5(±2.7)29.9(±2.5)20.1(±2.3)†††12.0(±1.9)†††6.2(±1.2)†††
 Alabama68.1(±8.5)†††81.7(±6.0)60.5(±7.1)46.6(±10.4)36.9(±10.1)31.1(±9.9)17.8(±9.3)NANANANA
 Arkansas53.3(±8.4)64.4(±6.8)†††37.5(±7.0)†††41.2(±10.7)32.4(±10.0)18.3(±7.2)12.7(±6.6)NANANANA
 Delaware84.9(±6.3)77.8(±5.9)78.0(±6.2)67.2(±9.8)64.5(±9.9)50.4(±10.2)26.2(±7.5)†††17.9(±6.7)†††10.7(±4.9)
 District of Columbia92.3(±5.0)84.5(±5.2)92.1(±3.3)57.8(±10.1)52.8(±10.1)38.5(±9.7)33.8(±9.7)12.3(±6.1)4.8(±2.5)
 Florida73.3(±8.5)86.8(±5.1)†††68.6(±6.8)39.4(±10.1)33.4(±9.6)25.3(±8.8)21.4(±9.3)15.4(±8.2)NANA
 Georgia89.3(±5.2)80.5(±6.0)†††73.1(±6.8)52.3(±10.8)36.8(±9.8)29.0(±9.0)19.5(±8.5)†††8.7(±4.7)NANA
 Kentucky57.3(±8.4)†††80.0(±5.6)†††62.9(±6.8)51.2(±10.6)43.5(±10.5)34.9(±9.9)NANANANANANA
 Louisiana84.8(±5.2)89.8(±3.7)90.8(±3.6)62.1(±8.6)52.6(±9.1)40.5(±9.0)20.6(±8.2)12.6(±6.9)NANA
 Maryland80.4(±6.9)†††78.1(±6.6)74.9(±6.9)42.7(±10.9)39.3(±10.5)30.9(±9.4)20.2(±7.5)13.8(±6.4)NANA
 Mississippi48.1(±9.7)†††53.5(±7.3)†††40.7(±7.1)39.7(±10.6)22.3(±7.7)12.1(±5.9)20.9(±9.2)11.2(±6.4)NANA
 North Carolina66.7(±7.9)87.9(±4.5)†††68.2(±6.4)53.3(±9.7)46.5(±9.8)35.5(±9.5)18.8(±7.1)11.8(±5.7)8.6(±5.0)
 Oklahoma65.1(±7.7)†††77.1(±5.6)†††63.8(±6.7)55.1(±9.5)49.5(±9.6)38.4(±9.4)24.4(±7.6)†††14.8(±6.0)10.6(±5.4)
 South Carolina58.3(±8.6)64.9(±7.2)58.5(±7.3)41.9(±10.6)31.6(±9.8)26.6(±9.5)18.1(±8.8)15.9(±8.5)NANA
 Tennessee70.8(±8.7)77.4(±6.2)†††69.4(±6.7)54.3(±11.0)40.9(±10.7)28.6(±9.4)20.3(±8.8)NANANANA
 Texas79.1(±3.9)82.5(±3.3)84.6(±3.3)†††51.2(±5.8)41.2(±5.7)30.3(±5.3)24.0(±5.0)†††14.2(±4.1)†††7.0(±2.4)†††
  Bexar County72.5(±8.5)78.6(±7.2)83.6(±6.0)43.0(±10.4)33.4(±9.8)26.3(±9.3)16.6(±8.3)NANANANA
  City of Houston77.6(±7.3)82.5(±5.7)87.6(±4.5)55.8(±9.4)46.0(±9.6)36.8(±9.5)38.0(±10.1)†††23.8(±9.0)15.1(±7.9)
  Rest of state79.8(±4.5)82.9(±3.7)84.4(±3.8)51.5(±6.7)41.4(±6.6)30.1(±6.1)23.3(±5.7)†††13.8(±4.7)6.5(±2.7)
 Virginia69.1(±7.7)†††88.7(±4.3)†††62.1(±7.4)50.9(±10.9)38.0(±10.3)27.9(±9.2)12.1(±5.8)NANANANA
 West Virginia61.5(±9.3)†††68.2(±7.1)64.1(±7.4)45.2(±10.6)41.2(±10.6)36.1(±10.2)18.3(±8.5)†††NANANANA
West 73.8(±3.6)†††87.4(±2.2)†††72.5(±3.1)61.4(±4.7)47.2(±4.9)36.2(±4.7)24.3(±4.1)†††15.6(±3.6)†††9.4(±2.9)
 Alaska73.6(±7.5)†††77.1(±5.0)†††52.7(±6.2)56.1(±9.3)46.3(±9.6)31.4(±8.8)14.1(±5.6)7.5(±3.7)NANA
 Arizona73.8(±6.8)†††87.5(±4.5)85.5(±5.0)54.3(±9.5)43.4(±9.5)36.9(±9.3)19.7(±7.0)†††12.8(±5.8)NANA
 California75.3(±6.2)†††89.4(±3.8)†††76.0(±5.5)65.0(±8.3)48.4(±8.8)35.8(±8.4)29.4(±7.4)†††19.3(±6.4)11.7(±5.2)
 Colorado81.6(±6.6)93.2(±3.5)†††73.2(±6.6)61.4(±10.8)†††44.9(±11.3)38.0(±11.2)31.3(±12.6)†††NANANANA
 Hawaii76.0(±6.6)74.1(±5.9)70.4(±6.3)64.6(±9.4)58.1(±9.8)43.4(±9.7)43.1(±9.7)†††27.5(±8.8)15.6(±7.6)
 Idaho57.0(±8.7)64.5(±6.1)63.2(±6.3)†††51.3(±9.5)41.6(±9.6)27.8(±8.2)16.2(±7.5)NANANANA
 Montana61.3(±8.9)90.2(±3.8)58.6(±6.6)†††55.1(±9.8)46.5(±10.0)41.6(±10.1)16.8(±7.0)10.0(±5.9)NANA
 Nevada69.4(±7.8)†††86.3(±5.0)66.3(±6.3)62.5(±9.5)44.6(±10.2)37.2(±10.2)11.6(±5.5)NANANANA
 New Mexico60.5(±8.2)82.6(±5.6)54.2(±7.0)§§§51.1(±10.1)38.7(±9.4)30.3(±8.7)20.2(±8.1)12.8(±7.0)NANA
 Oregon75.6(±6.2)†††86.0(±4.5)58.3(±6.3)58.5(±9.3)46.7(±9.5)38.6(±9.3)14.5(±5.9)7.2(±4.2)NANA
 Utah59.2(±8.7)81.5(±6.3)56.5(±7.0)44.3(±10.4)39.0(±10.0)24.1(±8.4)NANANANANANA
 Washington73.9(±8.4)86.0(±5.1)†††71.2(±6.6)64.5(±10.1)54.6(±10.1)43.5(±9.8)14.9(±6.2)9.6(±5.4)NANA
 Wyoming88.8(±5.6)85.4(±4.8)59.0(±6.6)53.9(±10.0)41.4(±9.6)30.3(±8.7)11.2(±4.9)NANANANA
Territory
 U.S. Virgin Islands75.6(±4.4)†††72.0(±4.5)†††38.1(±4.8)28.7(±6.5)16.4(±5.5)9.1(±4.4)10.5(±4.5)NANANANA

Abbreviations: CI = confidence interval; VAR = varicella; Tdap = tetanus toxoid, reduced diphtheria toxoid, and acellular pertussis; MenACWY = meningococcal conjugate; HPV = human papillomavirus; NA = not available (estimate not reported because unweighted sample size for the denominator was <30 or 95% CI half width/estimate >0.6).

Vaccination estimates for additional measures, including ≥2 doses MMR, ≥3 doses hepatitis B, and ≥1 dose varicella vaccines are available at http://www.cdc.gov/vaccines/stats-surv/nis/default.htm#nisteen.

Adolescents (N = 19,199) in the 2012 NIS-Teen were born during January 6, 1994–February 18, 2000.

≥2 doses of VAR vaccine among adolescents without a reported history of varicella disease.

≥1 dose Tdap vaccine on or after age 10 years.

≥1 dose of MenACWY or meningococcal–unknown type vaccine.

≥1 dose of HPV vaccine, either quadrivalent or bivalent. For ≥1, ≥2, and ≥3 dose measures, separate percentages are reported among females only (N = 9,058) and among males only (N = 10,141).

≥2 doses of HPV vaccine, either quadrivalent or bivalent.

≥3 doses of HPV vaccine, either quadrivalent or bivalent. Some adolescents might have received more than the recommended 3 HPV vaccine doses.

Estimates with 95% CI half-widths >10 might not be reliable.

Statistically significant (p<0.05) percentage point increase from 2011.

Statistically significant (p<0.05) percentage point decrease from 2011.

Healthy People 2020 Targets

The Healthy People 2020 national targets for vaccination coverage among adolescents by ages 13–15 years are 80.0% for ≥1 Tdap dose, ≥1 MenACWY dose, and ≥3 HPV doses (among females), and 90.0% for ≥2 varicella doses (5). Among adolescents aged 13–15 years, vaccination coverage in 2012 was 85.3% (CI = 84.1–86.5) for ≥1 Tdap dose, 73.8% (CI = 72.3–75.2) for ≥1 MenACWY dose, 28.1% (CI = 26.1–30.2) for ≥3 HPV doses (among females), and 76.8% (CI = 75.1–78.4) for ≥2 varicella doses. Measures for Tdap, MenACWY, and varicella vaccines increased by 2.3–5.0 percentage points from 2011 to 2012; HPV vaccine (≥3 doses) coverage remained unchanged. Based on point estimates, 36 states met or exceeded national Tdap vaccination coverage targets, 12 met or exceeded MenACWY targets, and nine met or exceeded varicella targets. No state met the national target for HPV vaccination coverage among females.

Editorial Note

National progress toward achievement of Healthy People 2020 targets for adolescents has been observed for Tdap, MenACWY, and varicella vaccines; however, at only 28.1%, national coverage for ≥3 HPV vaccine doses among females aged 13–15 years remains far short of the Healthy People 2020 target of 80%. In contrast, in 2012, coverage estimates among teens aged 13–15 years for ≥1 Tdap vaccine dose and ≥1 MenACWY vaccine dose were 85.3% and 73.8%, respectively, demonstrating that 80% vaccination coverage is achievable among adolescents. Among teens aged 13–17 years, the gap widened between Tdap and MenACWY vaccination coverage. Although age-related disparities were not observed in 2012 for many vaccines, age-related disparities were present for older adolescents for varicella and, among younger females, for HPV vaccination coverage (e.g., coverage for ≥3 HPV vaccine doses was more than 24 percentage points lower among females aged 13 years compared with those aged 17 years). Since reporting of HPV vaccination estimates among females began in 2007 with an initial ≥1 HPV vaccine dose coverage estimate of 25.1% (7), coverage rates for ≥1 HPV vaccine dose have increased only modestly compared with estimates for ≥1 Tdap vaccine dose and ≥1 MenACWY vaccine dose. However, from 2011 to 2012, HPV dose-specific vaccination rates among females did not increase at all, and series completion actually decreased. Following routine recommendations for males in 2011 (3) and females in 2006 (2), respectively, the initial coverage in 2012 for ≥1 HPV vaccine dose for males was lower than initial coverage for females (7). Differences in vaccination coverage underscore that clinicians and parents are missing opportunities to administer HPV, MenACWY, and varicella vaccinations during visits when Tdap vaccine is given. Vaccination coverage estimates remained widely variable by state and vaccine. Differing state school vaccination requirements for Tdap, MenACWY, and varicella vaccines, respectively, might have fostered increased coverage for these vaccines (8). For entry into nonresidential middle schools during the 2012–13 school year, 40 states required Tdap vaccination.¶¶¶ Increased Tdap vaccination coverage also might have been influenced by provider and parent awareness that, in 2012, most states reported increased pertussis cases or outbreaks.**** As with other vaccines recommended for the civilian population of the United States, ACIP recommends Tdap, MenACWY, and HPV vaccines for the youngest age group at risk for the vaccine-preventable diseases for whom safety and efficacy of the particular vaccines have been shown (1,4). ACIP recommends administration of all age-appropriate vaccines during a single visit (4). For example, during a single visit, a healthy child aged 11 years should routinely receive recommended doses of Tdap, MenACWY, and HPV vaccines; then, before leaving the provider’s practice settings, two subsequent visits within 6 months should be scheduled for completion of the HPV vaccine series as recommended. Other recommended strategies for increasing vaccination coverage, including HPV vaccination among females, have been well-described (6,8,9), but many have not been widely adopted. Clinicians should provide strong, clear, consistent vaccination recommendations to adolescents and their parents or guardians (6). Clinicians, public health agencies, and other stakeholders can also improve vaccination rates by reducing out-of-pocket vaccination costs for patients and their families (8). Through enrolled vaccination providers, the Vaccines for Children (VFC) program provides vaccines for uninsured, Medicaid-eligible, and other children through age 18 years whose families might not otherwise be able to afford vaccines.†††† HPV vaccination coverage was generally higher among teens living in poverty, which might reflect the VFC program’s effectiveness at reaching these young persons; however, series completion rates were lower among teens living in poverty, suggesting that other barriers need to be identified and addressed for this vulnerable population. Implementation of the Patient Protection and Affordable Care Act of 2010§§§§ also offers opportunities to improve vaccination coverage among children and adolescents. Under the law, nongrandfathered private health plans must offer, at no cost to beneficiaries, vaccines that are recommended by ACIP. Similarly, qualified health plans on the new health exchanges that go into effect starting in 2014 must offer ACIP-recommended vaccines at no cost to beneficiaries. The findings in this report are subject to at least three limitations. First, household response rates were 23.6% (cellular phone households) and 55.1% (landline households), respectively. Only 56.4% (cellular telephone) and 62% (landline) of completed household interviews also had adequate provider-verified vaccination data. After weighting adjustments, bias from nonresponse and exclusion of households without telephones might have remained. Coverage estimate increases of approximately 3 percentage points for Tdap, 2 for MenACWY, and 6 among females for HPV vaccination initiation might have resulted, based on a total survey error model including comparison to provider-reported data collected from a sample of National Health Interview Survey participants. Estimates of bias do not include errors in vaccination status (e.g., under ascertainment from incomplete vaccination provider identification and unknown medical record completeness) and do not address potential differential noncoverage or nonresponse bias over time (10). Second, weighted linear regression analyses using national data did not account for methodologic changes in sampling frames. Although vaccination estimates from landline only (2006–2010) and dual sampling frames (2011–2012) might not be comparable, prior methodologic assessment suggests that the addition of cellular telephone numbers beginning in 2011 should have had limited effects on annual national coverage estimates. Finally, estimates for particular states and reporting areas and for racial/ethnic populations with sample sizes <1,000 might be unreliable. For HPV coverage analyses by state and sex, small sample sizes decrease the power to detect differences. Achieving high vaccination coverage among adolescents is feasible, and progress is evident for most vaccines. Lack of progress with HPV vaccination among females warrants immediate action by health-care providers, parents, public health agencies, and other immunization stakeholders. Through the VFC program, eligible children and teens can receive recommended vaccines at no cost to their families for the vaccines. Additional efforts are needed to ensure that health-care providers administer recommended HPV and meningococcal vaccinations to boys and girls during the same visits when Tdap is given. Providers, parents, and adolescents should use every health-care visit, whether for health problems, well-checks, or physicals for sports, school, or camp, as an opportunity to review adolescents’ immunization histories and ensure that every adolescent is fully vaccinated on time with every recommended vaccine (1,4,6).
  7 in total

1.  Recommendations on the use of quadrivalent human papillomavirus vaccine in males--Advisory Committee on Immunization Practices (ACIP), 2011.

Authors: 
Journal:  MMWR Morb Mortal Wkly Rep       Date:  2011-12-23       Impact factor: 17.586

2.  Vaccination coverage among adolescents aged 13-17 years - United States, 2007.

Authors: 
Journal:  MMWR Morb Mortal Wkly Rep       Date:  2008-10-10       Impact factor: 17.586

3.  Advisory Committee on Immunization Practices (ACIP) recommended immunization schedules for persons aged 0 through 18 years and adults aged 19 years and older--United States, 2013.

Authors: 
Journal:  MMWR Suppl       Date:  2013-02-01

4.  Immunization of health-care personnel: recommendations of the Advisory Committee on Immunization Practices (ACIP).

Authors: 
Journal:  MMWR Recomm Rep       Date:  2011-11-25

5.  National and state vaccination coverage among adolescents aged 13-17 years--United States, 2011.

Authors: 
Journal:  MMWR Morb Mortal Wkly Rep       Date:  2012-08-31       Impact factor: 17.586

6.  Quadrivalent Human Papillomavirus Vaccine: Recommendations of the Advisory Committee on Immunization Practices (ACIP).

Authors:  Lauri E Markowitz; Eileen F Dunne; Mona Saraiya; Herschel W Lawson; Harrell Chesson; Elizabeth R Unger
Journal:  MMWR Recomm Rep       Date:  2007-03-23

7.  Human papillomavirus vaccination coverage among adolescent girls, 2007-2012, and postlicensure vaccine safety monitoring, 2006-2013 - United States.

Authors: 
Journal:  MMWR Morb Mortal Wkly Rep       Date:  2013-07-26       Impact factor: 17.586

  7 in total
  118 in total

1.  Human papillomavirus genotype-specific prevalence across the continuum of cervical neoplasia and cancer.

Authors:  Nancy E Joste; Brigitte M Ronnett; William C Hunt; Amanda Pearse; Erika Langsfeld; Thomas Leete; MaryAnn Jaramillo; Mark H Stoler; Philip E Castle; Cosette M Wheeler
Journal:  Cancer Epidemiol Biomarkers Prev       Date:  2014-11-02       Impact factor: 4.254

2.  Human Papillomavirus Vaccination Among Young Adult Gay and Bisexual Men in the United States.

Authors:  Paul L Reiter; Annie-Laurie McRee; Mira L Katz; Electra D Paskett
Journal:  Am J Public Health       Date:  2015-01       Impact factor: 9.308

3.  Hepatitis B vaccination among adolescents 13-17 years, United States, 2006-2012.

Authors:  Peng-jun Lu; David Yankey; Jenny Jeyarajah; Alissa O'Halloran; Laurie Elam-Evans; Stacie M Greby; James A Singleton; Trudy V Murphy
Journal:  Vaccine       Date:  2015-02-25       Impact factor: 3.641

4.  Regional variations in HPV vaccination among 9-17 year old adolescent females from the BRFSS, 2008-2010.

Authors:  Jacqueline M Hirth; Mahbubur Rahman; Jennifer S Smith; Abbey B Berenson
Journal:  Hum Vaccin Immunother       Date:  2014       Impact factor: 3.452

5.  Medical and sociodemographic factors associated with human papillomavirus (HPV) vaccination adherence among female survivors of childhood cancer.

Authors:  James L Klosky; Kathryn M Russell; Jessica L Simmons; Rebecca H Foster; Kelly Peck; Daniel M Green; Melissa M Hudson
Journal:  Pediatr Blood Cancer       Date:  2015-04-20       Impact factor: 3.167

6.  Uptake of human papillomavirus vaccine among adolescent males and females: Immunization Information System sentinel sites, 2009-2012.

Authors:  Karen A Cullen; Shannon Stokley; Lauri E Markowitz
Journal:  Acad Pediatr       Date:  2014-06-20       Impact factor: 3.107

7.  First Use of a Serogroup B Meningococcal Vaccine in the US in Response to a University Outbreak.

Authors:  Lucy A McNamara; Alice M Shumate; Peter Johnsen; Jessica R MacNeil; Manisha Patel; Tina Bhavsar; Amanda C Cohn; Jill Dinitz-Sklar; Jonathan Duffy; Janet Finnie; Denise Garon; Robert Hary; Fang Hu; Hajime Kamiya; Hye-Joo Kim; John Kolligian; Janet Neglia; Judith Oakley; Jacqueline Wagner; Kathy Wagner; Xin Wang; Yon Yu; Barbara Montana; Christina Tan; Robin Izzo; Thomas A Clark
Journal:  Pediatrics       Date:  2015-05       Impact factor: 7.124

Review 8.  ADXS-HPV: a therapeutic Listeria vaccination targeting cervical cancers expressing the HPV E7 antigen.

Authors:  Lori Cory; Christina Chu
Journal:  Hum Vaccin Immunother       Date:  2014       Impact factor: 3.452

9.  Delay and refusal of human papillomavirus vaccine for girls, national immunization survey-teen, 2010.

Authors:  Christina Dorell; David Yankey; Jenny Jeyarajah; Shannon Stokley; Allison Fisher; Lauri Markowitz; Philip J Smith
Journal:  Clin Pediatr (Phila)       Date:  2014-01-24       Impact factor: 1.168

10.  School Entry Requirements and Coverage of Nontargeted Adolescent Vaccines.

Authors:  Jennifer L Moss; Paul L Reiter; Young K Truong; Barbara K Rimer; Noel T Brewer
Journal:  Pediatrics       Date:  2016-11-08       Impact factor: 7.124

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