State and national vaccination coverage levels among children aged 19-35 months--United States, April-December 1994.

The National Immunization Survey (NIS) is a single survey providing state and national estimates of vaccination coverage levels among children aged 19-35 months. CDC implemented the NIS in April 1994 as one element of the five-part Childhood Immunization Initiative (CII) (1), a national strategy to achieve and maintain high vaccination levels among children during the first 2 years of life. NIS collects quarterly data from the 50 states, the District of Columbia, and 27 urban areas considered to have populations at high risk for undervaccination. This report of initial NIS findings provides the results of both national and state vaccination coverage levels for April-December 1994.