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Measles Is Back In The U.S. - And This 1 Group Of Adults Might Want To Consider A Booster
Yahoo News New Zealand • • health
Key Points:
- Measles cases in the U.S. have surged to 3,471 in 2026, marking a 30-year high with four related deaths, up significantly from 2,289 cases in 2025 and 285 in 2024.
- Measles, once declared eliminated in the U.S. in the 2000s, is now spreading domestically, with 38-40% of cases occurring in adults, some resulting in severe complications and death.
- The measles vaccine (MMR) is highly effective, with two doses providing about 97% protection, and most vaccinated individuals do not need a booster; adults unsure of their vaccination status are advised to check immunization records or consider a booster dose.
- Adults born before 1957 are generally considered immune due to natural infection, but those vaccinated between 1963 and 1967 may need an additional dose as the vaccine used then was less effective.
- Unvaccinated individuals exposed to measles should seek immediate medical care, as vaccination within three days or immunoglobulin treatment within six days can prevent illness.
