Trend and Graphs Already in 2026 more than 2,200 cases have been counted, making 2026 one of the two worst years for measles infections in the U.S. since 2000. NBC News is continuing to track confirmed measles cases across the United States, using Centers for Disease Control and Prevention data. The disease epicenter at the start of the year was in South Carolina, where the CDC has confirmed 600-plus measles cases. As of late January, <a href="https://www.nbcnews.com/health/health-news/south-carolina-measles-outbreak-surpasses-texas-vaccines-rcna256030" target="_blank">more than 500 people were in quarantine and hundreds infected in the state</a>. <a href="https://www.nbcnews.com/health/health-news/south-carolina-measles-outbreak-over-nearly-1000-cases-rcna342358" target="_blank">State officials declared the South Carolina outbreak over</a> in April. The map below will be updated regularly to show year-to-date new measles case counts reported in each state and Washington, D.C. Adding a formula here Citation
