PENNSYLVANIA, October 14, 2026 — The U.S. Centers for Disease Control and Prevention (CDC) is preparing to provide additional assistance to Pennsylvania as health officials work to contain a significant measles outbreak.

According to Reuters, Pennsylvania reported 1,136 measles cases and five associated deaths as of October 9, prompting state officials to seek federal assistance through the CDC’s Epi-Aid emergency response program.

The federal agency said it would work with local health authorities to investigate the outbreak, strengthen containment efforts, and help prevent further transmission. The response comes as measles cases have increased across parts of the United States since 2025.

The outbreak has also sparked disagreement between Pennsylvania officials and federal health authorities over how measles-associated deaths should be classified and counted. The CDC has reported a different nationwide death total, without identifying the states involved.

Why it matters: Measles is a highly contagious viral disease that can cause serious complications, particularly in young children and other vulnerable people. Public health authorities rely on outbreak investigations, vaccination, and timely identification of cases to reduce transmission.

Officials are expected to continue coordinating their response as they assess the outbreak and determine what additional measures may be needed.

Residents should consult their state health department or healthcare professional for current local guidance on measles exposure and vaccination.