Nine measles deaths that sparked the first compulsory vaccination in the U.S.
The 1991 Philadelphia-area measles outbreak grew to about 1,400 cases and nine deaths, many among children linked to Faith Tabernacle Congregation’s refusal of medical care. Health officials won court orders for door-to-door exams and, ultimately, the first compulsory vaccination in U.S. history. The episode intensified fear and debate over vaccine mandates and public health powers, a thread that resurfaces today as Pennsylvania faces renewed measles cases and deaths and prominent vaccine-safety discourse.