Although the avian flu (H5N1) virus may not be making the news as frequently, it is still working hard behind the scenes, ...

New versions of the H5N1 virus are increasingly adept at spreading. Suggestions to either let it rip in poultry or vaccinate the birds could backfire.

Scientists are on the trail of a mysterious five-particle structure that could challenge one of the biggest theories in ...

Experiments in mice show that some gut bacteria can absorb toxic PFAS chemicals, allowing animals to expel them through feces.

Read current news and medical research on influenza A, influenza B, including symptoms, vaccines and treatments for flu viruses.

As summer kicks into full gear and people are spending more time outside, there's one thing on many people's minds - ticks.

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