Overview

• The CDC confirmed 483 measles cases across 19 states as of March 28, 2025, marking the largest outbreak in years and surpassing 2024's total of 285 cases.
• Texas remains the epicenter with 400 cases, including 270 in Gaines County, which has one of the lowest vaccination rates in the state.
• Two deaths have been confirmed: one in Texas and one in New Mexico, with a third death under investigation.
• The outbreak has spread to Mexico, prompting the WHO to issue a warning about its significant public health impact and advising international travelers to check vaccination status.
• Efforts to contain the outbreak face challenges from vaccine hesitancy and misinformation, with 97% of cases occurring in unvaccinated individuals or those with unknown vaccination status.