While we often refer to it as "the flu," the influenza virus has several strains, with flu A and flu B considered the most ...

For a second time this season, at least 41 states are reporting high or very high levels of the flu. Here's how to stay safe.

Flu A and flu B are two different strains of influenza, explains Thomas Russo, M.D., professor and chief of infectious ...

A nasal vaccine for COVID-19 – based on technology developed at Washington University in St. Louis – is poised to enter a phase 1 clinical trial in the U.S. after an investigational new drug ...

Nearly 119,000 birds have been culled at a farm in California after a bird flu called H5N9 was detected among the poultry ...

Amid concerns about global health threats, the World Health Organization remains the most important platform for cooperation ...

An infectious disease MD explains for how long you're likely to transmit the flu to others, with her advice for preventing viral infection.

Bird flu has decimated poultry flocks and infected cattle herds. The risk to humans is currently low, but that could easily ...

It feels like everyone is sick right now. And while that is a slight exaggeration, the real situation isn’t too sunny either.

Does it feel like you know a lot of people fighting the flu virus this winter? The Centers for Disease Control and Prevention said flu activity remains high and continues to increase around the ...