Questions about the COVID-19 shot abound as federal recommendations shift and medical groups issue clashing guidance.

Influenza A H3N2 subclade K has driven flu cases across the country, with 52 counties in Florida seeing increases over the past week. While the current flu vaccine might be a "mismatch," it still ...

Add Yahoo as a preferred source to see more of our stories on Google. People who get a flu shot are less likely to become severely ill, be hospitalized or die. - Kylie Cooper/Reuters/File Flu is ...

Health experts typically advise getting your COVID-19 and flu vaccine by the end of October. However, if you've missed that window, you can still get them well into the respiratory virus season and ...