South Carolina's measles outbreak reaches 700 cases as CDC confirms 416 U.S. cases in 2026

South Carolina's Department of Public Health reported 54 new measles cases in three days, bringing the Upstate outbreak to 700 cases centered in Spartanburg County, and the CDC has recorded 416 U.S. measles cases so far in 2026; the Pan American Health Organization invited the United States and Mexico to a virtual meeting on April 13 to review elimination status.

South Carolina's Department of Public Health reported 54 new measles cases in a three-day span, raising the county-level outbreak first reported in October to 700 cases. The outbreak is concentrated in the Upstate and centered in Spartanburg County. Nationally, the CDC has confirmed 416 measles cases so far in 2026. The Pan American Health Organization has invited the United States and Mexico to a virtual meeting on April 13 to review measles elimination status. Known details: - South Carolina outbreak totals 700 reported cases, with 668 (about 95%) located in Spartanburg County. - The CDC reports 416 U.S. cases in 2026; 86% are age 19 or younger and 94% were unvaccinated or had unknown vaccination status. - The Pan American Health Organization invited the United States and Mexico to a virtual meeting on April 13 to review measles elimination status. Summary: The outbreak is concentrated in Spartanburg County and is part of a broader rise in U.S. measles cases this year. Regional and international health authorities have scheduled a review of elimination status on April 13, and further developments are pending.