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School vaccination rates reveal hidden measles outbreak risks. But access depends on where you live.
Researchers found school-level vaccination gaps that leave some neighborhoods more exposed to measles even when districtwide coverage looks adequate.
This summer, Pennsylvania launched an interactive website detailing vaccination rates at individual schools. Secretary of Health Dr. Debra Bogen said the data will help families and local leaders work to reduce vaccine-preventable diseases, such as measles and whooping cough.
Since measles was declared eliminated in the United States in 2000, CDC scientists have found that outbreaks involving more than 50 people have largely involved close-knit communities that for varying reasons have chosen not to get vaccinated.
During South Carolina's recent measles outbreak, the state health department began posting school-level vaccination data after 997 documented infections resulted in 874 students being asked to quarantine at home for up to 21 days.
Elsewhere, access to school vaccination data remains uneven; Texas officials do not provide routine school-level data, and Broward County Public Schools and Miami-Dade County Public Schools only submit aggregated district-wide figures to state health departments.
Parents like those of student Dylan Clear are using this data to assess outbreak risks; his school's 86% vaccination rate falls below the 95% threshold needed to prevent measles spread, prompting his family to coordinate a specialized safety plan.