Editor's note: Find the latest COVID-19 news and guidance in Medscape's Coronavirus Resource Center. More recent studies — but not all — show waning effectiveness of the mRNA vaccines to prevent ...

Editor's note: Find the latest COVID-19 news and guidance in Medscape's Coronavirus Resource Center. At a recent town hall meeting in Cincinnati, Ohio, President Joe Biden was asked about COVID-19 ...

Once bitten, twice shy. Strange infectious diseases are frequently reported in Africa. Let’s talk about the Delta variant of concern, which caused widespread devastation during Covid-19 pandemic.

Johnson & Johnson said Thursday that new data shows that its single-shot COVID-19 vaccine provides protection against the virus for at least eight months and effectively prevents infection from ...

The more contagious Delta variant of Covid-19 now makes up 83% of sequenced samples in the United States, US Centers for Disease Control and Prevention Director Dr. Rochelle Walensky said Tuesday.

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. The Centers for Disease Control and ...

GRAIN VALLEY, Mo. (WDAF) – A Missouri family is mourning the loss of their loved one to the Delta variant of COVID-19. They said 45-year-old Tricia Jones, a Grain Valley mother of two, was hesitant ...

The B.1.617.2 (delta) Covid-19 variant has surged in India and spread worldwide. In a test-negative case–control study, the effectiveness of two doses of BNT162b2 was 94% against the B.1.1.7 (alpha) ...