
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.
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