U.S. measles cases surpass 2025 total as outbreaks continue
CDC data show 2,371 confirmed U.S. measles cases in 2026, already above 2025’s total, as outbreaks and lower vaccination coverage raise back-to-school concerns.
Vaccination
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Anchorage wastewater detects wild-type measles RNA ahead of school reopening
Alaska officials detected wild-type measles RNA in Anchorage wastewater samples collected July 7, 8, 9 and 14, but said the finding is not a confirmed human case or proof of transmission.
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Anchorage wastewater detects measles-virus RNA, but Alaska reports no confirmed case in alert
Very low levels of measles-virus RNA were found in Anchorage wastewater samples collected July 7–14. Alaska officials say the signal does not confirm a case, transmission or an outbreak.
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Delaware declares statewide measles outbreak after second confirmed case
Delaware declared a statewide measles outbreak July 22, 2026, after confirming a second positive case. Health officials urged unvaccinated residents to seek vaccination.
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Delaware declares measles outbreak after two additional cases bring reported total to four
Delaware’s Division of Public Health reported two additional positive measles cases on July 22, bringing the statewide reported total to four and prompting renewed vaccination messaging.
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Delaware Declares Measles Outbreak After Cases Rise to Four
Delaware declared a measles outbreak on July 22 after reporting four confirmed cases. Here is what the response changes and what residents should do after exposure.
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Vancouver-area measles cases reach seven after Salmon Creek clinic exposure
Clark County reports seven measles cases since July 22 and warns unvaccinated people may be at risk after a July 17 Salmon Creek clinic exposure.
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Measles alert for travelers: possible exposure at PHL terminals A–C
Philadelphia PA – Philadelphia’s health department warns some travelers at PHL terminals A, B and C on July 4 (7:30–11:15 a.m.) may have been exposed.