Interim Results: State-Specific Influenza A (H1N1) 2009 Monovalent Vaccination Coverage --- United States, October 2009--January 2010

摘要

To improve the precision of state-level estimates from each survey, CDC combined data collected during November 2009--February 2010 and estimated the cumulative proportion of persons vaccinated with at least 1 dose during October--January using the Kaplan-Meier survival analysis procedure. If a child aged 6 months through 9 years received 2 doses, the month of the first dose was used in the analysis.