The mutated strain, known as subclade K, is causing a surge in cases in the United Kingdom, Canada, and Japan. Here's what to know.

People from six months old to about 64 years old get the same dose of the flu vaccine, but there's a higher dose for those 65 and over. Flu season typically runs from October through April. Washing ...

Vaccine mismatches may raise severity risks this flu season. Low vaccination uptake increases overall flu transmission ...

Flu changes every year, so our vaccine has to change with it. Here’s the quick what-and-why behind the annual shot, how it’s picked, made, and when to get it. Here are a few questions about influenza ...

WASHINGTON — It’s time to get a flu vaccine, and pediatricians are urging people to get them after last winter, when the U.S. saw the most flu-related child deaths in 15 years. October is the ideal ...