
Map: Track measles outbreaks, cases and vaccination rates by state across the U.S.
• NBC News is tracking confirmed measles case counts and state infection tallies across the U.S. through a dedicated map. • Measles case counts reached a 34-year high in 2025 and have increased further in 2026. • This tracking provides public health data on outbreaks and vaccination rates to help individuals monitor infection risks by state.
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