The flu virus is changing in ways never seen before, increasing infections and raising concerns about vaccine effectiveness ...

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

Fact checked by Nick Blackmer Flu season is in full force in the United States. At least 310,000 flu-related hospitalizations ...

Each year, flu experts from around the world gather to map out recommendations for next winter's flu vaccine. This year, it's ...

The US is in the throes an unusually intense and severe flu season, with hospitalization rates topping the levels seen with ...

The United States is experiencing its most severe flu season in more than a decade, with the U.S. Centers for Disease Control ...

The influenza A virus genome consists of eight segments of single-stranded, negative-sense viral RNA, which encode multiple ...

The WHO South-East Asia Region (SEAR), with its high population density, is recognised by epidemiologists as a critical ...

The volume of recent flu infections and related hospitalizations is higher than what Sonoma County epidemiologists have ...

Louisiana Surgeon General Ralph Abraham sent a directive to state health workers Thursday ending long-standing mass ...

Flu cases are surging this winter—this season is no joke. New data from the Centers for Disease Control and Prevention ...

Doctor visits for flu symptoms are at a 15-year high. Why is this flu season so bad? Doctors discuss flu trends, symptoms and ...