COVID-19 variant XFG accounted for 0% of U.S. cases in May. By late-June, it became the third-most common strain.

A newly discovered COVID variant, BA.3.2, has been detected in California wastewater and shows signs of immune escape, ...

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 ...

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 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 ...

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 ...

COVID-19 is still a serious threat for a lot of people with compromised immune systems and pre-existing conditions that can cause complications—and now, a new variant, complete with new COVID symptoms ...

As summer comes to an end, COVID-19 cases are on the rise again in California. While respiratory viruses usually peak in the winter, the novel coronavirus can also surge in the warmer months.

Six years after COVID-19 first reached New Zealand, the country is experiencing its ninth wave of infections. But the virus we are living with today behaves very differently from the one that caused ...