MEASLES exposure at a California theme park prompted a public health alert after prolonged contact. Measles Exposure Requires 21 Day MonitoringThousands of visitors may have been present during the 11 hour exposure window. In 2025, 93% of reported measles cases occurred among people who were unvaccinated, with 243 hospitalizations and three deaths. Rising Cases Reinforce Measles VaccinationSerious complications of measles can include pneumonia, brain swelling, and death. With summer travel and attendance at crowded venues potentially increasing opportunities for exposure, health officials are urging people to confirm their immunity before travel.