National, state, and urban area vaccination coverage levels among children aged 19-35 months--United States, April 1994-March 1995.

The National Immunization Survey (NIS) is an ongoing survey to provide national, state, and selected urban area estimates of vaccination coverage levels among children aged 19-35 months. CDC implemented NIS in April 1994 as one element of the five-part Childhood Immunization Initiative (CII), a national strategy to achieve and maintain high vaccination levels among children during the first 2 years of life; CII contains interim goals to the year 2000 national objectives. NIS collects quarterly data from all 50 states, the District of Columbia, and 27 urban areas considered to be at high risk for undervaccination. This report provides the results of national, state, and urban area vaccination coverage levels for April 1994-March 1995, which document the highest overall vaccination levels ever achieved for preschool-aged children in the United States, but a wide range (41 percentage points) between areas with the highest and lowest vaccination coverage levels.