Measles Surges: Americas Warn of Global Travel Risks

The Pan American Health Organization (PAHO) has issued critical recommendations following a measles resurgence alert, reporting over 20,000 confirmed cases and 25 deaths across the Americas this year. The number of cases between January and mid-May 2026 is four times higher than the same period in 2025, exceeding last year's total.

Mexico leads with 10,920 cases, followed by Guatemala. The upcoming 2026 FIFA World Cup, to be held in Mexico, the United States, and Canada from June 11 to July 19, raises concerns about increased transmission due to mass gatherings and international travel.

PAHO urges countries to enhance surveillance in high-risk areas and recommends travelers unvaccinated or with unknown status receive a measles-rubella vaccine at least two weeks before travel. Most infections occur in unvaccinated individuals or those with unknown vaccination status.

Globally, nearly 185,000 measles cases were reported in 155 countries in the first five months of 2026. PAHO also advises expanding case detection, maintaining rapid response teams, and strengthening contact tracing. Vaccination remains the most effective public health measure.