North America’s three biggest measles outbreaks have grown to a total of more than 2,500 known cases.

Preliminary data from the U.S. Centers of Disease Control and Prevention says the U.S. has seen 8,485 cases of whooping cough in 2025.

Health officials say another Michigan dairy worker has been diagnosed with bird flu.

A Michigan farmworker has been diagnosed with bird flu in what is the second human case associated with an outbreak in U.S. dairy cows.