If you are wondering what the different letters and numbers used to name influenza viruses mean, such as H1N1, H3N2, H5N1 and influenza A, B, C or D, you are probably not alone. The letters and ...

As flu season ramps up in the U.S., influenza is not as simple as it first appears, with several different strains in play.

Most U.S. states are reporting high or very high flu-like activity, while COVID-19 rates remain lower than this time last year.

Previous seasonal flu infections and vaccinations may protect us against infection from the highly pathogenic H5N1 bird flu outbreak.

Respiratory illnesses like influenza, COVID-19, and RSV are surging across the United States, according to CDC data.

Influenza virus is an infectious agent belonging to the virus family Orthomyxoviridae that causes a respiratory tract infection (influenza or 'flu') in vertebrates. There are three main species ...

There’s no medication for norovirus. Instead, you’ll need to rehydrate as much as possible with water and other liquids. Seek ...