Louisiana, Missouri, and Virginia reported their first measles cases of 2025, all linked to international travel. Virginia's case involves a child, prompting potential exposure alerts at two medical centers. Louisiana's unvaccinated adult patient is in isolation. Missouri's case involves a child with limited exposure. Over half of US states have reported measles cases in 2025, marking the largest outbreak in six years. The CDC, while providing weekly updates, has remained relatively quiet compared to past outbreaks, despite a significant number of cases, hospitalizations, and the recent shipment of MMR vaccines to Texas.

Prepared by Olivia Bennett and reviewed by editorial team.