WASHINGTON, D.C. — The Americas has recorded 47,459 confirmed measles cases and 44 deaths in 2026, the region’s highest case count in 22 years, prompting the Pan American Health Organization (PAHO) to urge stronger vaccination, surveillance and rapid outbreak response.
As of July 18, cases were already more than triple the 15,011 recorded during all of 2025. Guatemala, Mexico, the United States and Peru account for 95% of confirmed cases. Guatemala leads with 30,371 cases and 26 deaths, followed by Mexico with 12,255 cases and 17 deaths.
PAHO classifies the regional public health risk as very high, citing active outbreaks, immunity gaps, international travel and populations with inadequate vaccination coverage.
The organization says prevention starts with vaccination. Countries are being urged to achieve and maintain at least 95% coverage with two doses of measles-containing vaccine, particularly protecting children and under-vaccinated communities.
Measles spreads through the air when an infected person breathes, coughs or sneezes. Symptoms can include fever, cough, runny nose, red eyes and a rash.
PAHO is urging health authorities to detect suspected cases early and respond rapidly to stop transmission. Unvaccinated and under-vaccinated people, young children and communities with limited healthcare access face increased risk of severe illness and death.