But this time of year, another virus typically increases in spread, and causes more unpleasant, if short-term, symptoms. Here's what you need to know about norovirus, or the stomach flu.

Messenger RNA vaccines, or mRNA, differ from traditional ones. Instead of growing a virus and weakening it to allow the body to engage its natural defenses, mRNA vaccines use pieces of genetic code to ...

The mosquito-borne Chikungunya virus causes fever and severe joint pain, which can persist for months. With no specific medicine, the best prevention is avoiding mosquito bites. Outbreaks have ...

Bird flu, also known as H5N1, has been around for decades. But a discovery in 2024 came as a surprise to public health experts.

China has reported 7,000 cases of chikungunya virus since initial reports surfaced in early July 2025. Here's what to know about the virus in Arizona.

Measles is highly contagious virus, can cause seizures, blindness and death, and children under the age of 5 are particularly vulnerable to complications. The virus spreads through the air when an ...