At nearly 1,000 cases, mostly in unvaccinated children, the South Carolina measles outbreak that officially ends today was one of the worst the United States has seen in nearly four decades. Of those whose age and vaccination status were known, 95.3 percent were unvaccinated and 90.8 percent of cases were in children 17 years old and younger. The South Carolina Department of Public Health said that the outbreak has cost the state at least $2 million in actual expenditures. Up to 90 people at a time were working on responding to and tracking down potential cases. Non-medical vaccine exemptions across the state’s total K-12 student population had more than tripled between 2015 and 2024, growing to 27,730 students.\n\n— Post and Courier / New York Times, April 26, 2026