Six years ago, on March 11, 2020, the World Health Organization declared COVID-19 a global pandemic. Here's what else happened on that day.

"As these viruses continue to evolve, public health officials watch carefully to see whether new strains will be more easily spread or cause more severe disease, and they are continuously testing to ...

Most people have put the COVID-19 pandemic behind them. Infections, vaccinations, or a combination of both have bolstered people's immunity, and while new variants continue to pop up, getting sick ...

There remains much we don’t know about long covid, including its origins. It’s a complex condition likely caused by more than one thing, including a dysfunctional immune response to the earliest covid ...

As the summer travel season picks up, COVID cases and hospitalizations are rising in Los Angeles County — and some of those recently reinfected are finding their latest bout to be the worst yet. There ...

By Kamal Choudhury and Blake Brittain March 3 (Reuters) - Moderna has agreed to pay Genevant Sciences, a subsidiary of ...

Flu has overtaken covid in infections and hospitalizations during the winter respiratory virus season, and their virulence is ...

Add Yahoo as a preferred source to see more of our stories on Google. COVID-19 cases are ticking up in the U.S. as children head back to school and the country prepares to enter the colder weather ...

Long Covid continues to evade a clear diagnostic test, researchers reported in a study published Monday in the Annals of Internal Medicine. The findings are part of the National Institute of Health’s ...

COVID-19 continues to ramp up in Georgia and across the country and this latest spike in infections is expected to trigger the biggest summer wave in two years, according to available data from the ...

Add Yahoo as a preferred source to see more of our stories on Google. Doctors still suggest masking up in places like your local grocery store if COVID-19 cases are high in your area. (Getty Images) ...