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Maine CDC Health Advisory
June 18, 2025
Measles Updates and Domestic Travel Recommendations
Ongoing measles outbreak activity across North America poses an ongoing risk of measles infection to people living in or visiting areas with measles transmission. Unvaccinated individuals are at the highest risk of infection. The U.S. Centers for Disease Control and Prevention (U.S. CDC) provides additional vaccination considerations for persons traveling outside of the U.S. The Maine Center for Disease Control and Prevention (Maine CDC) recommendations for persons traveling within the U.S. to areas with measles activity include an extra dose of the measles vaccine before age 12 months (in addition to the routine 2-dose series), an accelerated 2nd dose in older children, and two doses for adults without documented immunity.
