The rise in human metapneumovirus (HMPV) cases in the US has health authorities on alert.

You may be sick with what feels like a nasty cold or a case of the flu, but there’s another, lesser-known respiratory virus ...

HMPV, a respiratory virus with no vaccine, is circulating. Learn its symptoms, how it spreads and who is at risk.

Hundreds of dogs in as many as 16 states have contracted a mysterious respiratory illness that has spread across the U.S. since August. Some canines have died as a result. A variety of dog breeds have ...

Add Yahoo as a preferred source to see more of our stories on Google. With holiday parties in full gear, it's that time of year that will eventually lead to people getting sick. Feeling ill after that ...

An upper respiratory infection is an illness that can cause nasal congestion, runny nose, sore throat, and cough. It can also cause a fever for the first few days. Upper respiratory infections are ...

Vatican authorities said Monday that Pope Francis has a complex infection in his respiratory system and will require more targeted drug treatment. Officials said the 88-year-old pope is suffering from ...