US measles cases reach 4,588

The United States has recorded 4,588 cases of measles in 2026, a total that more than doubles the count from the previous year. The Centers for Disease Control and Prevention reported 178 new infections this week, bringing the national tally to its highest level since the modern era began. These figures reflect activity across at least 43 distinct outbreaks.

Pennsylvania continues to bear the largest burden, with state authorities reporting 1,338 cases as of Friday. South Carolina and Utah also face severe outbreaks, each reporting more than 500 cases. Health experts note that official numbers likely undercount the true spread. The disease is among the most contagious known to medicine, and early symptoms like rash, fever, and cough often do not prompt immediate medical visits.

Discrepancies have emerged regarding mortality data. Pennsylvania officials have reported five measles-associated deaths and are investigating a sixth. The CDC has recorded three deaths nationally but has not specified the location of the third case. This lack of clarity has led to questions about whether the federal count includes the Pennsylvania fatalities or incidents from other states.

Health Secretary Robert F. Kennedy Jr. reportedly asked senior CDC officials in September to remove a specific measles death from the official tally. He questioned whether the disease contributed to that individual's death, according to Reuters. This move has drawn criticism from experts who argue the agency lacks transparency in its reporting methods.

The department has also proposed changes to the vaccine adverse event reporting system, known as VAERS. The new rules would allow doctors to bill for reporting suspected vaccine injuries. VAERS has long been cited by anti-vaccine activists to claim safety issues, though researchers rely on the system to track rare side effects. All vaccines carry risks, a fact acknowledged by vaccinologists, but the method of evaluating those risks has shifted under new leadership.

Before Kennedy’s appointment, an expert panel reviewed each vaccine change individually to determine if benefits outweighed risks. Kennedy removed all 17 sitting members of that board and replaced them with individuals aligned with his views. A court blocked the appointment of those new members in March. Since taking office, the secretary has made several public claims about vaccine safety, including statements that children receive over 90 doses and that the measles, mumps, and rubella vaccine contains aborted fetal debris.