Flu season peaks between December and February, with influenza A and B causing seasonal epidemics. The flu shot reduces the risk by 40-60%, but immunity wanes within months.

Getting the Flu and Then Your Shot May Benefit Immunity Sep. 30, 2024 — Researchers found that natural immunity from previous flu infections has a significant impact on how well future influenza ...

Norovirus infection rates are extremely high this year, raising the question: Why can’t a vaccine protect us from the stomach ...

Millions of people fall ill with the flu every year, and adults age 65 and older are at higher risk of developing serious ...

Doctors say this is the worst flu season in more than a decade. According to the Centers for Disease Control and Prevention ...

Bird flu cases are still rising in the U.S. as the virus continues to devastate poultry farms. More than 145 million chickens, ducks, turkeys and other fowl have been slaughtered across the United ...

Flu cases are rising across Southern California, with more people streaming into the emergency room with symptoms every day.

The flu season is in full swing in New York, and residents may be booking flu shots at their local doctor's offices and pharmacies. But does it work right away? The answer is no. It takes about ...