A new COVID-19 variant called "Stratus" has been circulating in Oklahoma, and the state's positive test rate has been higher than the national average during the summer months. Stratus is 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 World Health Organization (WHO) on March 11 declared COVID-19 a pandemic, pointing to the over 118,000 cases of the coronavirus illness in over 110 countries and territories around the world and ...

Delaware's overall COVID-19 cases are decreasing – there were 5,225 reported COVID-19 cases this season, according to the Delaware Department of Health and Social Services – even as a new variant, ...

JOHANNESBURG — South Africa has reintroduced tough restrictions including a ban on alcohol sales and an extended nightly curfew as it fights a fast-increasing surge of COVID-19 cases. President Cyril ...

COVID-19 cases continue to climb week-over-week as summer draws to a close, according to U.S. health data. Some regions of the United States are experiencing higher rates of positive COVID-19 tests ...

Covid-19 was never just another cold. We knew it was going to stick around and keep changing to try to get the upper hand on our immune systems. But we've changed, too. Our B cells and T cells, ...