CDC Reports Measles Cases in the U.S. Reach 35-Year High, Surpassing 2025 Totals
The Centers for Disease Control and Prevention (CDC) has reported that measles cases in the United States have reached a 35-year high, surpassing the total number of cases reported in 2025. As of July 21, 2026, the number of cases has reached 2,295, exceeding the 2,289 cases reported in 2025. This marks the highest number of measles cases since 1991, when 9,643 cases were reported. The outbreak is particularly severe in Pennsylvania's Lancaster County, where over 100 cases have been reported, with none of the affected individuals having received the recommended two doses of the MMR vaccine. Experts emphasize that vaccination is the best protection against measles, providing 97% lifetime protection after two doses. They highlight that outbreaks occur where vaccination rates remain below the critical 95% threshold. States with lower vaccination rates, such as South Carolina and Utah, are experiencing significant surges in cases.