Pennsylvania is experiencing a significant measles outbreak, with reports indicating between 1,350 and 1,398 cases this year. The epicenter of the crisis is Lancaster County, which hosts the largest Amish population in the U.S. and accounts for more than a third of the state's infections.
Between three and five deaths have been reported as a result of the outbreak. The surge is attributed to low vaccination rates within Plain communities and a general decline in MMR vaccination rates across the state.