Measles cases have increased significantly in the Region of the Americas. Between epidemiological weeks 1 and 39 of 2026, 55,792 confirmed cases were reported in 17 countries and territories. This represents a 4.8-fold increase compared to the same period in 2025.

The majority of cases were reported in Guatemala, Mexico, the United States, Peru, and Canada. A total of 77 deaths have been reported, with the majority occurring in Guatemala and Mexico. Further details on the situation are available from the source report.

The report provides more information on the measles situation in the Region of the Americas, including the number of cases and deaths reported in each country.