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Illinois is seeing a "notable increase" in hospital admissions for flu cases, according to state health officials, as levels of respiratory viruses continue to tick up. But which type of flu is ...

With the devastating 1918 pandemic in mind, US health officials saw an outbreak in Asia and swung into action. What happened ...

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

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.

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

UC San Francisco's Rais Vohra, MD, explains recent increase in reported virus infections and the risks of consuming raw cow’s milk.

Flu cases are rising across Southern California, with more people streaming into the emergency room with symptoms every day.