Overview

• Canada has logged over 2,755 cases this year, with the premature infant’s death marking its first measles fatality in 2025
• The United States reports at least 1,168 infections and three deaths, nearly 80% linked to a West Texas outbreak that spread to neighboring states
• Mexico has confirmed 1,520 cases and four deaths as of late May, prompting travel advisories from regional health authorities
• Outbreaks in Canada, the U.S. and Mexico have been concentrated in closely connected Mennonite communities with historically low vaccination rates
• The World Health Organization classifies the Americas’ measles risk as high and officials urge two doses of MMR vaccine for full protection