2003 National Immunization Survey Results - Vaccination Coverage Levels

The NIS is conducted quarterly by the Centers for Disease Control and Prevention to assess the vaccination coverage level among children 19 through 35 months of age. NIS utilizes a random digit dial survey to collect immunization information from households with eligible children. For completeness and verification, immunization data are also requested from vaccination providers with consent of parents.

Results for the NIS conducted from January through December of 2003 showed that the 4-3-1 vaccination coverage level (four or more doses of diphtheria-tetanus-pertussis vaccine, three or more doses of poliovirus vaccine, and one or more doses of any measles-containing vaccine) for children aged 19 through 35 months in the state of Texas was 78.1 (+3.8%). The 4-3-1-3 level (4-3-1 plus 3 or more doses of Haemophilus influenzae type b vaccine) for the same age group in Texas was 77.2 (+3.8%). Children participating in this study were born from February 2000 through May 2002.

4-3-1 Series1 Estimated Coverage among Children 19-35 Months of Age

Geographic Area Coverage (95% CI)
Bexar County 79.1% (+ 6.1)
Dallas County 75.9% (+ 5.9)
El Paso County 81.6% (+ 5.7)
Houston, City of 74.8% (+ 5.7)

1 Completion of 4 or more doses of diphtheria-tetanus-pertussis vaccine, 3 or more doses of poliovirus vaccine, 1 or more doses of measles-containing vaccine