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 ...

The bird flu outbreak has spread to all 50 states, infecting dairy cattle, poultry farms and 61 humans across the country.

Public health officials have just reported the first known “severe” case of bird flu in the United States. There are now 61 ...