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Measles Cases Are Rising-Do You Need a Booster Shot to Stay Safe?
AOL.com • • health
Key Points:
- Pennsylvania has reported two deaths from measles complications, the first in 35 years, amid a nationwide surge in cases with 2,777 confirmed infections across 47 states as of August 20, 2026.
- Measles cases in 2026 have already surpassed previous years, making it the highest on record since 1991, with serious complications especially affecting young children, adults over 20, pregnant individuals, and immunocompromised people.
- The MMR vaccine, given in a two-dose series, is 97% effective at preventing measles, and most fully vaccinated individuals do not need a booster, as immunity does not significantly wane over time.
- Certain groups may benefit from an additional MMR dose, including those vaccinated between 1963-1967 with an ineffective vaccine, people born before 1989 who received only one dose, and those at higher risk due to travel or occupational exposure.
- Individuals unsure of their vaccination history are advised to get an MMR dose without prior testing, as an extra dose is safe, and vaccines are widely available through primary care providers, pharmacies, and health departments.
