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, ...

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 ...

Yep, just in time for Valentine's Day.

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 ...

A detailed analysis of immune cells in Long COVID patients has revealed a previously unknown molecular signature linked to lingering symptoms. In Germany, Long COVID develops in up to about one in ten ...

COVID-19 plays a smaller role in everyday life, but the disease has not disappeared. Here are the symptoms you should be ...

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 ...