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Updated: Jun 5, 2026

Vaccinia Virus Infection & Temporal Analysis of Virus Gene Expression: Part 2
Published on: April 10, 2009
Impact of 2-dose vaccination on varicella epidemiology: Connecticut--2005-2008
Jessica A Kattan1, Lynn E Sosa, Heather D Bohnwagner
1Epidemic Intelligence Service, Centers for Disease Control and Prevention, Atlanta, Georgia, USA. jessica.kattan@ct.gov
Abstract:
In 2006, the Advisory Committee on Immunization Practices recommended that children routinely receive 2 varicella vaccine doses in place of the 1 dose previously recommended. This recommendation's initial impact on varicella epidemiology in Connecticut was assessed. Reported incidence and case-specific data were compared for 2005 and 2008. Varicella incidence decreased from 48.7 cases/100,000 persons in 2005 to 24.5 in 2008. Age-specific incidence decreased significantly (P < .05) among children aged 1-14 years. Reported varicella incidence has declined in Connecticut after implementation of routine 2-dose varicella vaccination for children. Continued surveillance is needed to determine the recommendation's full impact.
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