Measles cases hit 35-year high as vaccination rates fall below immunity threshold
Measles cases hit 35-year high amid vaccination rates falling below herd immunity protection level.
Event / Health
US Measles Outbreak 2026
Measles resurgence in the United States with emergency declarations and expanded vaccination authority, reaching nearly 3,900 cases in 2026, the worst year since 1991.
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2026-08-02 to 2026-10-30 · UTC publication dates
Coverage begins 26 Jul, 01:53 UTC
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2 alternative perspectives
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