Differing strains of the coronavirus continue to appear around the world and a new COVID-19 variant, the so-called "Delta" variant, has health experts concerned. The variant, otherwise known as B.1617 ...

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, ...

Add Yahoo as a preferred source to see more of our stories on Google. (NewsNation) — As the weather begins to change and respiratory illnesses become more common, a highly transmissible strain of ...

The fast-spreading delta variant of the coronavirus has been gaining traction worldwide since it was first detected in India. It’s a version of the coronavirus that has been found in more than 80 ...

More children are getting infected with COVID-19 and as a result, more kids are ending up in the hospital, but health experts are still unclear on whether the Delta variant driving the resurgence of ...

A fresh Covid variant is triggering symptoms that could easily be overlooked as it races through communities at breakneck speed. Health officials in Ireland recorded 425 new infections during the ...

Add Yahoo as a preferred source to see more of our stories on Google. Getty Images An alleged warning has spread online for years about a supposed "new COVID-Omicron XBB variant" — a new strain of the ...

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 ...