Health Secretary Robert F. Kennedy Jr. says the flu shot isn't effective in protecting children. Here's what experts say.

While the new findings are encouraging, "vaccines won’t do any good if people don’t get them," one expert said.

Plenty of people – about 1 in 3, according to some studies — feel bad for a day or two after they get a flu shot. The most common symptoms include headaches, muscle aches, fatigue and fever, all of ...

H3N2 subclade K strain — is responsible for 90% of influenza A cases across the U.S., which has led to double the cases in ...

Although this year’s flu vaccine doesn’t protect as well against the dominant subclade K strain, doctors still say that ...

A late-emerging influenza A mutation known as subclade K weakened protection, but doctors say vaccination still reduces ...

DENVER, Colorado — A new Denver Health study published Tuesday in JAMA Network Open found that text messages and digital ...

The Centers for Disease Control and Prevention announced Monday it’s no longer recommending the flu vaccine for all children.

Flu vaccination in older adults may prevent hospitalizations and cardiovascular events, saving lives and reducing health care costs, according to Marco del Riccio, MD.

Early estimates cited by the World Health Organization suggest that seasonal influenza vaccines continue to protect against severe illness and hospitalization in both children and adults. iStock A new ...

Following a spike in flu cases and hospitalizations in Massachusetts, the City of Boston is opening a series of flu and COVID ...