from Morbidity & Mortality Weekly Report
Posted 04/04/2003

The implementation of state and local requirements for vaccination before entry to Head Start programs, licensed child care facilities, and school has resulted in high vaccination levels among preschool and school children.^{[1, 2]} One of the national health objectives for 2010 is to maintain >/=95% vaccination coverage among children attending licensed child care centers and kindergarten through postsecondary school (objective 12-23).^[3] National estimates of vaccination coverage among children in Head Start programs, licensed child care facilities, and those entering school have been published each year since 1997 on the basis of reports from federally funded immunization programs (IPs) in the 50 states, five cities, eight territories, and the District of Columbia.^[4] This report summarizes data reported by states, cities, and the District of Columbia for the 2000-01 school year. Although vaccination coverage for 2000-01 appears similar to that for previous years,^[4] the number of programs reporting and the completeness of the reports are lower than in previous years and do not permit precise estimation of coverage at the national level. IPs use school data to identify undervaccinated children enrolled in Head Start programs, licensed child care facilities, and those entering school; evaluate the success of prevention programs targeting these children; and document the proportion of children whose parents claim exemptions from one or more vaccines. Plans are ongoing to assist IPs in applying successful strategies for collecting, reporting, and increasing the precision of coverage estimates for these populations.

Methods of assessing vaccination coverage differ among the 56 IPs, in part because state and local laws determine which vaccines and doses are required and because sampling and data abstraction methods vary. IPs used a standard one-page form to report the proportion (2.9 to 100% for Head Start and child care, 0.9 to 100% for kindergarten and first grade) of eligible children included in the assessment and coverage for each required vaccine.

Head Start Programs

Of the 56 IPs, 23 states, New York City, and Chicago (44.6%) reported vaccination coverage for children enrolled in Head Start programs (Table 1). All 25 programs reported coverage for >/=3 doses of poliovirus vaccine; 17 (30.4%) reported coverage for 3 doses of hepatitis B (HepB) vaccine; 16 (28.6%) reported coverage for 4 doses of diphtheria and tetanus toxoids and pertussis (DTaP) vaccine, 1 dose of measles, mumps, and rubella (MMR) vaccine, and 1 dose of Haemophilus influenzae type B (Hib) vaccine; and nine (16.1%) reported coverage for 3 doses of DTaP and for >/=3 doses of Hib. Of all 108 estimates of vaccination coverage reported for the Head Start group, 86 (79.6%) were >/=95%.

Licensed Child Care Facilities

Of the 56 IPs, 23 states, New York City, and Chicago (44.6%) submitted vaccination coverage levels for children enrolled in licensed child care (Table 2). All 25 programs reported coverage for >/=3 doses of poliovirus vaccine; 19 (33.9%) reported for 3 doses of HepB, 18 (32.1%) for 1 dose of MMR, 15 (26.8%) for 4 doses of DTaP, 14 (25.0%) for 1 dose of Hib, 10 (17.9%) for >/=3 doses of Hib, and nine (16.1%) for 3 doses of DTaP. Of all estimates of vaccination coverage for the child care age group (n = 110), 60 (54.5%) were >/=95%.

Kindergarten/First Grade

Of the 56 IPs, 36 states and New York City (66.1%) submitted vaccination coverage levels for children enrolled in kindergarten and/or first grade (Table 3). The number of programs reporting coverage varied by vaccine. All 37 programs reported coverage for >/=3 doses of poliovirus vaccine, 27 (48.2%) programs reported for 4 doses of DTaP and for 3 doses of HepB, 22 (39.3%) programs for 2 doses of MMR, 10 (17.9%) programs for 3 doses of DTaP, and six (10.7%) programs for 1 dose of MMR. Of all estimates of vaccination coverage reported for the kindergarten/first grade age group (n = 129), 99 (76.7%) were >/=95%.

Reported by:L Barker, Data Management Div; M McCauley, Office of the Director, National Immunization Program; TL Fairley, PhD, EIS Officer, CDC.