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. 2014 Feb 28;63(8):174-7.

Two-dose varicella vaccination coverage among children aged 7 years--six sentinel sites, United States, 2006-2012

Two-dose varicella vaccination coverage among children aged 7 years--six sentinel sites, United States, 2006-2012

Adriana S Lopez et al. MMWR Morb Mortal Wkly Rep. .

Abstract

In 2007, the Advisory Committee on Immunization Practices (ACIP) recommended a routine second dose of varicella vaccine for children at age 4-6 years, in addition to the first dose given at age 12-15 months. One strategy recommended for increasing varicella vaccination coverage is a school entry requirement of proof of varicella immunity. To determine the extent of implementation of the routine 2-dose varicella vaccination program, the number of states with a 2-dose varicella vaccination elementary school entry requirement in 2012 was compared with the number in 2007, and 2-dose varicella vaccination coverage during 2006 was compared with coverage in 2012 among children aged 7 years, using data from six Immunization Information System (IIS) sentinel sites. The number of states (including the District of Columbia) with a 2-dose varicella vaccination elementary school entry requirement increased from four in 2007 to 36 in 2012. Two-dose varicella vaccination coverage levels among children aged 7 years in the six IIS sentinel sites increased from a range of 3.6%-8.9% in 2006 to a range of 79.9%-92.0% in 2012 and were approaching the levels of 2-dose measles, mumps, and rubella (MMR) coverage, which had a range of 81.9%-94.0% in 2012. These increases suggest substantial progress in implementing the routine 2-dose varicella vaccination program in the first 6 years since its recommendation by ACIP. Wider adoption of 2-dose varicella vaccination school entry requirements might help progress toward the Healthy People 2020 target of 95% of kindergarten students having received 2 doses of varicella vaccine.

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Figures

FIGURE 1
FIGURE 1
Varicella vaccine school entry requirements, by number of doses required — United States, September 2012
FIGURE 2
FIGURE 2
Among children aged 7 years, average percentage of 2-dose varicella vaccination coverage (VV2), compared with average percentage of 2-dose measles, mumps, and rubella (MMR2) vaccination coverage, and VV2 by Immunization Information System (IIS) sentinel site* — six IIS sites, United States, 2006–2012 * Data for 3,633,391 children aged 7 years for the period 2006–2012 were analyzed to estimate VV2. The average number of children available for analysis per sentinel site during that period ranged from 10,343 in North Dakota to 159,167 in New York City. VV2 became required for elementary school entry in 2008 in North Dakota and Wisconsin, in 2009 in Minnesota, and in 2010 in Michigan.

References

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