South Carolina Measles Outbreak Expands, 538 People in Quarantine

The outbreak has reached several universities.

A sign providing information about measles in Seminole, Texas, on April 9, 2025. Brandon Bell/Getty Images

The largest active measles outbreak in the United States has expanded, South Carolina officials reported on Jan. 20.

Eighty-eight new cases have been confirmed in South Carolina since Friday, the South Carolina Department of Health stated, with the outbreak reaching colleges for the first time.