Doctor's visits for flu symptoms are at a 15-year high. Why is this flu season so bad? Doctors discuss flu severity, symptoms and how to stay safe.

A Nevada dairy worker has tested positive for a newly identified strain of bird flu, sparking concerns about potential cow-to ...

The winter flu season features two types of influenza. Here's what you need to know about them and how they differ.

Yahoo News provides the latest updates on the spread of bird flu in the U.S. and its effect on rising egg prices and ...

Influenza levels in the US are the highest they've been in 15 years amid winter weather and a second wave of the virus.

Maine state officials on Tuesday reported new cases of bird flu in wild birds and urged precautions to protect chickens and other domestic birds. Avian influenza has been detected in "four Canada ...

Bosnia has reported an outbreak of highly pathogenic H5N1 avian influenza, the World Organisation for Animal Health said on Tuesday, as a seasonal wave of the disease known as bird flu continues in ...

New evidence shows that bird flu, or avian influenza, is mutating beyond chickens and cows. A Nevada dairy worker tested ...

Yahoo News provides the latest updates on the spread of bird flu in the U.S., and its effect on rising egg prices and ...

Testing results from patients indicate that two strains of seasonal flu that are causing most illnesses — a Type A H1N1 and a ...

The U.S. winter virus season is in full force, and by one measure is the most intense in 15 years.