As of Feb. 26, there have been 1,136 confirmed measles cases in the United States this year, in 28 states — including Pennsylvania — according to the Centers for Disease Control and Prevention.

Helen Branswell covers issues broadly related to infectious diseases, including outbreaks, preparedness, research, and vaccine development. Follow her on Mastodon and Bluesky. You can reach Helen on ...

A 4-year-old boy picks out a bandage before getting vaccinated in San Jose, California, in 2022. (Jane Tyska/Digital First Media/The Mercury News via Getty Images) How we did this Pew Research Center ...

Vaccination campaigns have nearly eradicated some of the most deadly and transmissible diseases. However, against a backdrop of a rising tide of vaccine hesitancy, and U.S. leaders pulling global ...

The elimination of vaccine requirements in Florida schools announced by the state’s surgeon general on Wednesday marks a significant shift in how the state has long protected children against ...

Myocarditis has become a flashpoint in debates about COVID vaccines; however, new research suggests this rare heart inflammation is a window into how powerful immune technologies sometimes misfire in ...

Dr. Kirk Milhoan, a pediatric cardiologist who leads the Advisory Committee on Immunization Practices, said a person’s right to refuse a vaccine outweighed concerns about illness or death from ...

Health Secretary Robert F. Kennedy Jr. has toned down his public criticism of vaccines, under orders from the White House.

A Gates Foundation report shows child death rates from preventable diseases are expected to increase for the first time in 25 years. Seniors who witnessed diseases like polio and measles firsthand ...