Public health risk assessment related to measles: implications for the Americas Region V2 - 18 February 2026

This rapid risk assessment (RRA) supersedes the assessment published on 24 March 2025 and aims to evaluate the current risk to public health in the Americas Region associated with the increase in measles outbreaks and cases during 2025 in some countries in the Region.

The overall risk of this event in the Americas Region, especially in countries with low vaccination coverage, is classified as "Very High" with a "High" confidence level based on the available information.