NBC News Details Methodology for Tracking Childhood Vaccination Decline
· World · NBC News
NBC News conducted a data investigation, an update to its September 2025 project "The Vaccine Divide," to track the decline in childhood vaccinations. Data for this update was collected between June and October 2026. The investigation involved gathering extensive data from state governments and public records archives. NBC News collaborated with infectious disease researchers at Stanford University to process Freedom of Information Act documents. The collected data, primarily from state health agencies, was standardized to map and compare kindergartner vaccination and exemption rates across thousands of counties for each academic year.
Why it matters
This investigation provides critical insights into public health trends by detailing the decline in childhood vaccination rates across the US. The findings can inform policy decisions and public health campaigns aimed at improving vaccination coverage and preventing outbreaks of vaccine-preventable diseases.
Read the original report — NBC News
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