US records 4,410 measles cases as outbreak grows

The United States Centers for Disease Control and Prevention (CDC) has recorded 4,410 measles cases so far in 2026, an increase of 330 in a week, and has dispatched an investigator to the state of Pennsylvania to help contain the country’s largest outbreak. CDC figures also show 451 measles-related hospitalisations nationwide this year. Children and teenagers aged five to 19 account for 42 percent of cases, followed by adults aged 20 and older, who make up 41 percent. Seventeen percent of cases were among children under the age of five. Pennsylvania reported 1,222 cases across 42 counties as of Wednesday, including 86 new infections since October 9, according to the state health department.