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Story summary
- U.S. health officials reported over 2,700 measles cases in 2026, with 94% unvaccinated or unknown status.
- Only ten states met the 95% MMR herd-immunity threshold during the 2025-26 school year.
- Kindergarten MMR coverage fell 0.1% in 2025-26, leaving roughly 280,000 children undocumented.
- Requests for non-medical vaccine exemptions have risen steadily since the 2020-21 school year.
- Authorities announced two measles-related deaths on Aug. 25 in Pennsylvania, including a newborn with lung-tissue evidence.
