A Nevada dairy worker has tested positive for a newly identified strain of bird flu, sparking concerns about potential cow-to ...

Influenza levels in the US are the highest they've been in 15 years amid winter weather and a second wave of the virus.

Flu cases are surging across the U.S., with doctor visits for flu-related illnesses reaching their highest levels since 2009, according to the CDC.

The winter flu season features two types of influenza. Here's what you need to know about them and how they differ.

Yahoo News provides the latest updates on the spread of bird flu in the U.S. and its effect on rising egg prices and ...

Flu cases soar across the US; Sacramento sees highest flu-related medical visits since 2009. Learn prevention tips and why vaccination rates matter.

Last year there were 207 pediatric deaths attributed to the flu, NBC News reported. The CDC said the number of cases is ...

Are people at risk for bird flu? How can I protect myself? Bird flu’s risk for the general public is still low, with no signs ...

Flu infections are at or near their highest levels in at least 15 years and are still rising, the Centers for Disease Control and Prevention says.

The U.S. winter virus season is in full force, and by one measure is the most intense in 15 years.

Maryland is experiencing an explosion in flu cases in recent weeks. Statewide data shows flu activity in Maryland is very high.

Data on flu test positivity and Tamiflu prescription fills show that influenza activity has already surpassed the past 7 ...