Read, Watch or Listen

Measles cases in the U.S. have surged to a 33-year high of 1,277 in 2024, exceeding previous records. The Centers for Disease Control and Prevention (CDC) attributes immunity to prior infection (before 1957) or the MMR vaccine. The CDC emphasizes the MMR vaccine's effectiveness against measles, mumps, and rubella.

Prepared by Emily Rhodes and reviewed by editorial team.