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Use of public school immunization data to determine community-level immunization coverage
Enrique Ramirez1, Igor D Bulim, John M Kraus
1Chicago Department of Public Health, Immunization Program, 2160 West Ogden Ave., Chicago, IL 60612, USA. ramirez_enrique@cdph.org
Public Health Reports (Washington, D.C. : 1974)
|March 15, 2006
Summary
Chicago school immunization data closely matched national survey estimates for vaccine coverage. This approach can help public health officials target areas needing improved vaccination rates.
Area of Science:
- Public Health
- Epidemiology
- Immunization Programs
Background:
- Accurate immunization data is crucial for public health surveillance.
- School entry data offers a potential source for monitoring vaccination coverage.
- Identifying under-vaccinated communities is essential for targeted interventions.
Purpose of the Study:
- To compare immunization coverage data from Chicago Public Schools (PSID) with National Immunization Survey (NIS) estimates.
- To assess the validity of using school-based data for public health monitoring.
- To identify Chicago communities with persistently low vaccination rates.
Main Methods:
- Utilized four years of Chicago Public School Immunization Data (PSID) including demographics and vaccination records.
- Calculated coverage for measles-containing vaccine (MCV) and the 4:3:1 series.
- Compared PSID coverage levels with NIS estimates, stratified by race/ethnicity.
- Employed geographic information system software to map coverage variations across community areas.
Main Results:
- PSID-derived MCV coverage closely approximated NIS estimates (e.g., 84.6% vs. 87.2% in 2000).
- Coverage levels by racial/ethnic groups from PSID fell within NIS confidence intervals.
- PSID consistently identified 12 community areas with MCV coverage below 80% annually.
Conclusions:
- School immunization data (PSID) provides a reliable measure comparable to national survey data (NIS).
- This methodology enables health departments to pinpoint areas with low immunization coverage.
- Resources can be effectively directed to communities with the greatest need for vaccination support.