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

Even after the two-week wait, never slack on these anti-flu measures. How Effective the Flu Shot Is Flu vaccine effectiveness can vary from season to season. The variation depends in part on the ...

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 ...

As of Dec. 21, 144.6 million doses of flu vaccine had been distributed in the United States for the 2024–25 season, according to the CDC. The Centers for Disease Control and Prevention strongly ...