Home / Health / PA Measles Cases Explode: 142 in 2026, Outpacing 2025
PA Measles Cases Explode: 142 in 2026, Outpacing 2025
28 Jul
Summary
- Pennsylvania has recorded 142 measles cases in 2026, a significant rise from 16 cases in 2025.
- Lancaster County is the hardest-hit area with 84 reported measles cases as of July 27.
- Vaccination remains the most effective method to protect against measles and its severe complications.
Pennsylvania has recorded 142 cases of measles in 2026, a dramatic increase from the 16 cases reported in all of 2025. This surge places the commonwealth in the midst of the nation's worst measles outbreak in over 25 years. As of July 27, Lancaster County leads with 84 cases, underscoring the severity of the situation.
Health officials emphasize that vaccination is the most effective defense against the highly contagious disease. All measles cases in Pennsylvania this year have occurred in unvaccinated individuals. The Department of Health recommends a two-dose MMR or MMRV vaccine regimen and has encouraged accelerated vaccination schedules, particularly for infants and those needing catch-up doses.
Measles, eliminated from the U.S. in 2000, can lead to severe complications, including a rare and fatal brain disorder called SSPE that can manifest years after infection. Experts are hopeful that Pennsylvania will achieve the 95% immunization threshold needed for herd immunity as students return to school, aiming to protect the community.
