The latest data on U.S. COVID-19 test positivity rates shows a complicated picture as we head towards the new year.

However, as typical infection patterns return to the United States, CDC expects pertussis cases to increase both in ...

Is COVID going around again as the U.S. approaches the winter? Infectious disease experts share what to know and how to stay ...

Another state has reported a possible case of human bird flu as overall figures rise in the U.S., increasing the risk of a pandemic.

Data from the Centers for Disease Control and Prevention show cases of norovirus, the highly contagious stomach bug, are surging in parts of the U.S.

A person in Louisiana contracted the nation's first serious human case of avian influenza ... million birds in 569 counties and all 50 U.S. states, according to the CDC. While it's still uncommon ...