School vaccine data can expose hidden outbreak risks. But access depends on where you live.

Public health officials are leveraging school vaccination data to uncover hidden outbreak risks, but access to this information varies widely depending on where you live. Researchers have found that measles outbreaks often occur in close-knit communities with low vaccination rates, and analyzing vaccination rates at the school level can help identify these at-risk areas. However, the availability and ease of access to this data varies significantly across states.

In Pennsylvania, a new state website allows anyone to look up student vaccination rates at individual schools, providing valuable insight for parents like Amanda Clear. Clear's research revealed that only 86% of students at Dylan's school were vaccinated against measles, which is below the 95% threshold needed to prevent an outbreak. Despite Dylan being vaccinated himself, Clear recognizes the importance of having this information to make informed decisions about her son's health.

However, not all states make this data readily available. In Texas, for instance, the public and state health department do not have routine access to school-level vaccination data. The state only requires school districts to report vaccination rates at an aggregated district-wide level. Texas' spokesperson explained that legislation to require reporting at the individual school level failed due to concerns from some legislators who feared it could result in harassment of students and families.

In contrast, Minnesota's health department has posted vaccination rates for individual schools and school districts since 2014. This data has helped identify at-risk areas, improve awareness among school and childcare leaders, and reduced the department's workload on data requests. On the other hand, Florida does not publicly disclose school-level vaccination data unless specifically requested, making it difficult for parents and researchers to assess local outbreak risks.

The lack of consistent and easily accessible school vaccination data across states can obscure localized clusters of unvaccinated children who may be vulnerable to outbreaks. Researchers have highlighted the importance of analyzing these data points at the school level to better understand and mitigate the risks posed by vaccine-preventable diseases like measles.