As preparations intensify for the 2026 FIFA World Cup and other major international events, the Pan American Health Organization (PAHO) is calling on countries across the Americas to strengthen measles surveillance, vaccination programs, and outbreak response measures.
The warning comes amid a significant rise in measles cases across the region and globally. PAHO has advised health authorities to review vaccination coverage and surveillance systems, identify high-risk areas, and implement preventive measures to reduce the risk of disease transmission during large gatherings and increased international travel.
According to PAHO, travelers aged six months and older who cannot provide proof of immunity or complete vaccination should receive a measles-rubella vaccine at least two weeks before traveling to affected areas. The organization also recommends providing travelers with information about measles symptoms, including fever, rash, cough, runny nose, and conjunctivitis.
Health authorities are being encouraged to strengthen monitoring efforts at airports, border crossings, ports, and major event venues. Rapid case detection, active surveillance, and trained response teams will be critical in preventing outbreaks and managing potential cases linked to international travel.
The alert follows a sharp increase in measles infections throughout the Americas. Between January and May 2026, more than 20,500 confirmed cases and 25 deaths were reported across 16 countries and one territory, representing a fourfold increase compared to the same period in 2025.
Mexico and Guatemala have reported the highest number of cases this year, while outbreaks and imported infections have also been recorded in countries including the United States, Canada, Peru, Bolivia, Belize, Costa Rica, Honduras, Panama, and Uruguay.
PAHO noted that most infections have occurred among unvaccinated individuals or those with unknown vaccination status. The organization emphasized that vaccination remains the most effective tool for preventing measles transmission and protecting public health.
With millions of fans expected to travel for the 2026 FIFA World Cup, health officials are urging countries to take proactive measures to reduce the risk of outbreaks and ensure a safe environment for participants, visitors, and local communities.
