Overview

• Mexico’s health ministry has confirmed 3,911 measles cases and 14 deaths as of August 4, marking the worst outbreak in over a century
• Chihuahua and Sonora account for the highest concentration of cases, prompting deployment of the national rapid response team to Chihuahua
• Authorities have administered 4.5 million measles vaccines nationwide and maintain a reserve exceeding 10 million doses
• Rapid response actions feature vaccination blocks, epidemiological cordons, macrocenters, home-to-home brigades and intensified outreach in high-risk areas
• The immunization drive prioritizes children under 5, adults aged 10–49 with incomplete schedules, health and education workers and vulnerable communities