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

so aim to get your vaccine before the end of October. Flu season ramps up between December and February. How Effective the Flu Shot Is Flu vaccine effectiveness can vary. It depends in part on ...

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.

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

Ten states and New York City are experiencing the highest levels of flu activity, according to the CDC. Flu cases are surging across the nation, closing nearly a dozen schools and swamping hospitals ...

For example, last year's seasonal flu vaccine was 41% effective in preventing medically attended flu, but offered significantly more protection against infections caused by influenza B compared to ...