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National, state and urban-area vaccination-coverage levels among children aged 19-35 months, United States, 1999
E T Luman1, L E Barker, D M Simpson
1National Immunization Program, Centers for Disease Control and Prevention, Atlanta, GA 30333, USA. ecl7@cdc.gov
Insights
The 1999 National Immunization Survey (NIS) found high vaccination coverage rates nationally for most vaccines in children. However, coverage varied across states and urban areas, highlighting the need for continued monitoring.
Area of Science:
- Public Health
- Epidemiology
- Immunization Programs
Background:
- Vaccination coverage assessment is crucial for the U.S. immunization program.
- The National Immunization Survey (NIS) is the primary tool for measuring vaccination rates.
Purpose of the Study:
- To estimate vaccination coverage rates for children aged 19-35 months in 1999.
- To provide national, state, and urban-area level coverage estimates for recommended vaccines.
Main Methods:
- Utilized the 1999 National Immunization Survey (NIS), a nationally representative sample.
- Verified vaccination data through provider records.
- Calculated coverage estimates for the nation, states, and selected urban areas.
Main Results:
- National vaccination coverage estimates were high for most vaccines and demographic groups in 1999.
- Coverage estimates varied significantly at the state and urban-area levels.
- Results were analyzed by poverty status, race/ethnicity, urbanicity, and provider characteristics.
Conclusions:
- The 1999 NIS demonstrated generally high national vaccination coverage.
- Disparities in coverage exist across different geographic areas and demographic factors.
- Continued monitoring of vaccination coverage is essential to identify and address gaps.
Background:
Assessment of vaccination coverage is an important component of the U.S. vaccination program and is primarily measured by the National Immunization Survey (NIS).
Methods:
The 1999 NIS is a nationally representative sample of children aged 19 to 35 months, verified by provider records, that is conducted to obtain estimates of vaccination coverage rates. Coverage estimates are calculated for the nation, states, and selected urban areas for recommended vaccines and selected vaccine series.
Results:
Coverage estimates are presented by a variety of demographic and healthcare-related factors: overall, by poverty status, race/ethnicity, selected milestone ages, participation in WIC, level of urbanicity, provider participation in VFC, and by provider facility type. In 1999, national coverage estimates were high for most vaccines and among most demographic groups. State and urban-area level estimates varied.
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