The United States is seeing a second peak in flu cases this season. After doctor’s office visits for flu dipped early this year, they jumped past the previous season peak at the end of last month, with a 30% test positivity rate — and there are still months to go.

For a second time this season, at least 41 states are reporting high or very high levels of the flu. Here's how to stay safe.

Dr. Mallika Marshall explains that at-home tests can save you a trip to the doctor's office as flu season begins in the U.S.

The highly contagious bird flu has hit Montgomery County, Maryland, where officials say a backyard flock of chickens tested positive for the virus, making it the first case of a homeowner’s birds having the virus in Maryland this year and bringing the number of cases in the D.C. region to 11.

A stray cat in San Mateo County recently tested positive for bird flu, officials said Thursday. The case is not related to an H5N1 incident involving a backyard poultry flock in San Mateo, according to the county executive’s office.