7 trends tracked about this subject — the full history, oldest to newest below.
Public health authorities are raising alarms as measles cases surge across the United States, outpacing totals recorded for the entirety of 2025.
US measles cases hit a record high, prompting doctors to speak out
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Delaware confirms first measles case in over a decade
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U.S. measles cases in 2026 are rapidly approaching the total 2025 yearly toll, signaling one of the worst outbreaks in decades.