Overview

• The third epidemiological alert was issued on July 9 after confirmed measles cases reached 3,095 nationwide.
• Weekly infections jumped from 2,597 to 3,095 between June 30 and July 4, marking a rebound after late-May declines.
• The outbreak remains focused in Cuauhtémoc municipality, Chihuahua, though suspected transmission has reached 18 other states.
• Sinave data indicate that 92% of infected individuals were unvaccinated and that children under five represent the largest age group impacted.
• The Secretaría de Salud and Sinave have launched intensified MMR drives targeting 12- and 18-month vaccinations, urging health workers to enhance surveillance and case notification.