A measles outbreak crossed into Mexico from Texas. A larger tragedy followed - CNN

Health officials say the outbreak began when a 9-year-old boy visited relatives in Seminole, Texas, then returned to Mexico and developed a measles rash. Within weeks, many of his classmates became ill and a local school was forced to close, and the cluster contributed to a larger, worsening outbreak. The case illustrates how measles can spread quickly across communities and borders, underscoring gaps in vaccination and cross-jurisdictional public-health coordination.