The one thing that no one wants to be gifted this Christmas is a nasty bout of the flu. But with the number of hospital patients with the virus reaching levels not seen since 2010, this year’s winter ...

Add Yahoo as a preferred source to see more of our stories on Google. A new flu variant known as subclade K is on the rise across the country. Although a spike in this particular strain of influenza, ...

Here’s what the Centers for Disease Control and Prevention (CDC) says about the Delta variant, its symptoms, characteristics and other things to watch for: Viruses constantly change through mutation, ...

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. As cases reach "very high" levels, a ...

A newer COVID variant called XFG is currently fueling cases of the virus across the country. Nicknamed “Stratus,” this variant first took hold over the summer and now makes up nearly 70% of COVID-19 ...

It's not just the flu spreading around the U.S.

The timing of symptom onset depends on lots of factors, including the amount of virus to which someone was exposed, Hotez says. Their level of pre-existing immunity may also affect the likelihood or ...