Those infected with the flu are most contagious during the first three days, the CDC said. In some cases, however, people can spread the flu even before experiencing symptoms or up to five to seven ...

As North Carolina illness rates spike post-holidays, here's what to know about the spread of flu, stomach flu and COVID-19.

A new flu variant fueling a fast-paced rise in cases across the state has brought with it some symptoms unlike those many have come to associate with the virus.

Add Yahoo as a preferred source to see more of our stories on Google. Stuffy noses and bothersome coughs aren’t the only winter illness symptoms making the rounds right now. Lots of people are also ...

Cases of one of the world's most infectious diseases were reported at two major US airports during peak holiday travel.

Cases are rising across the UK, and one doctor has warned that some people may experience long-term effects including gut ...

In Texas, flu activity is "very high," according to the CDC. Here's what to know about flu symptoms, how long you're ...

This bug is sweeping across the UK and if you're one of the unlucky few, you could have permanent complications.

Outbreaks of a highly contagious stomach bug dubbed "winter vomiting disease" are surging across the U.S. From Aug. 1 through Nov. 13, 153 outbreaks of norovirus were reported in 14 states, according ...

Adenovirus infections are usually mild but can cause a range of illnesses. Here's how it spreads and how to reduce your ...

With flu cases surging in Illinois as a new and mutated variant rapidly spreads, mitigating spread of those who contract the virus is increasingly important. But how long are you actually contagious ...