Canada (Manitoba, Ontario): Manitoba faces an increase in cases of measles with 42 new cases reported in May alone. Since February 2025, a total of 60 confirmed and 4 probable cases were reported by health officials. Outbreaks of cases with measles have been reported in Ontario with a total number of 655 cases in 2025.
US (multiple states): A total of 1’046 cases of measles have been confirmed as of 22 May 2025. Affected states are: Alaska, Arkansas, California, Colorado, Florida, Georgia, Hawaii, Illinois, Indiana, Kansas, Kentucky, Louisiana, Maryland, Michigan, Minnesota, Missouri, Montana, New Jersey, New Mexico, New York City and State, North Dakota, Ohio, Oklahoma, Pennsylvania, Rhode Island, Tennessee, Texas, Vermont, Virginia and Washington. In 2025, 92 % of the confirmed cases (961 of 1046) are associated to 14 outbreaks.