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PAHO Issues Alert as Measles Cases Surge Across the Americas

6 Feb 2026 3:46 PM | Deborah Hodges (Administrator)

MEXICO CITY -- The Pan American Health Organization (PAHO) issued a new epidemiological alert following a surge of measles cases across the Americas, with Mexico reporting the highest numbers. It also called for urgent vaccination campaigns, highlighting that 78% of recent cases involved unvaccinated people as reported by MEDPAGE TODAY. 

Through the first 3 weeks of the year, Mexico led the way with 740 cases

The alert, announced on Wednesday, follows Canada's loss of measles-free status in November -- a setback the U.S. and Mexico could soon mirror. While both governments have requested a 2-month extension to contain their respective outbreaks, the situation is complicated by the Trump administration's January withdrawal from the World Health Organization, the parent agency of PAHO.

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