Measles cases have been reported by 39 states and jurisdictions in the United States, the worst outbreak since 2019.

(AP) - Kentucky has its first measles outbreak of 2025, as the U.S. case count sits just short of a 30-year high.

There have been more measles cases in the US this year than any other since the the disease was declared eliminated a quarter ...

With measles outbreaks, avian influenza and syphilis and HIV on the rise, Canada needs to strengthen its disease surveillance ...

According to state immunization data, vaccination rates among kindergartners in Massachusetts have been falling — from 95.9% ...