They can cause all sorts of unpleasant symptoms. Certain symptoms, like a sore throat or fatigue, are hallmarks of all three.

The numbers are in from the first year of required reporting of flu vaccination coverage among nursing home residents, and, ...

Add Yahoo as a preferred source to see more of our stories on Google. The flu epidemic is stabilizing. The positivity rate and other benchmarks for the week ending on Jan. 10 have decreased compared ...

As potentially deadly avian influenza (H5N1) continues its global spread, moving from birds into mammals and in rare cases ...

A research team from the LKS Faculty of Medicine at the University of Hong Kong (HKUMed) has developed a machine-learning ...

Some surveys have shown that nearly 30% of people believe getting a flu shot can actually cause influenza. This belief is likely due to common side effects linked to the vaccine, including headache, ...

As flu season lingers unusually late, UAB experts explain how influenza spreads, why symptoms occur, which prevention ...

As avian influenza spreads to cattle, Nebraska researchers are developing a vaccine with early success in preclinical trials.

During the early stages of a pandemic, viruses tend to evolve in ways that enhance their ability to reproduce and spread, ...

New York State health officials say flu cases are declining across New York, and the virus is no longer prevalent this season ...

Approximately 43,000 service members were killed by the influenza virus that was first identified at an Army base in Haskell ...