The Pan American Health Organization (PAHO) is urging countries in the Americas to strengthen immunization activities, enhance disease surveillance and rapid response interventions, as measles cases continue to rise in the region. As of 8 August 2025, a total of 10,139 confirmed measles cases and 18 related deaths have been reported across ten countries, representing a 34-fold increase compared to the same period in 2024.

The outbreaks are linked primarily to low vaccination coverage, with 71% of cases occurring in unvaccinated individuals and a further 18% in people whose vaccination status is unknown. In 2024, coverage with the first dose of the measles, mumps, and rubella (MMR) vaccine in the region reached 89% (two percentage points higher than in 2023), while the second dose increased from 76% to 79%. However, these levels remain below the 95% recommended to prevent outbreaks.

“Measles is preventable with two doses of a vaccine, which is proven to be very safe and effective. To stop these outbreaks, countries must urgently strengthen routine immunization and conduct targeted vaccination campaigns in high-risk communities,” said Dr. Daniel Salas, Executive Manager of the Special Program for Comprehensive Immunization at PAHO.