Hepatitis A Vaccination Coverage Among U.S. Children Aged 12-23 Months
Source : http://www2c.cdc.gov/podcasts/download.asp?af=h&f=2081554...
To assess Hepatitis A vacinnation coverage among children 12-23 months from 2006 through 2009, CDC used data from eight Immunication Information System (IIS) sentinel sites.