Results for the NIS conducted from January through December of 2001 showed that the 4-3-1 vaccination coverage level (four doses of diphtheria-tetanus-pertussis vaccine, three doses of polio vaccine, and one dose of measles-containing vaccine) for children aged 19 through 35 months in the state of Texas was 74.9 ( + 3.7%). The 4-3-1-3 level (4-3-1 plus 3 doses of Haemophilus influenzae type b vaccine) for the same age group in Texas was 73.7 ( + 3.8%). Children participating in this study were born from February 1998 through May 2000.
4-3-1 Series1 Estimated Coverage among Children 19-35 Months of Age
4-3-1 series estimated coverage among 19-35 month old children
| Geographic Area |
Coverage (95% CI) |
| Bexar County |
75.1% (+ 5.1) |
| Dallas County |
68.9% (+ 5.7) |
| El Paso County |
69.2% (+ 5.3) |
| Houston, City of |
70.5% (+ 6.6) |
1 Completion of 4 doses of diphtheria-tetanus-pertussis vaccine, 3 doses of polio vaccine, 1 dose of measles-containing vaccine.
Source: