The Delta variant, also referred to as a "double mutant" because it carries two mutations, is 55 per cent more transmissible ...

The delta variant is fueling the COVID-19 surge in the United States, but experts warn that a more dangerous variant could emerge if more Americans don't get vaccinated. Delta is the most recent of ...

New Centers for Disease Control and Prevention (CDC) guidelines for fully vaccinated people in light of the delta variant do not include a social distancing recommendation for most people, as cities ...

Moderna on Tuesday released preliminary data indicating its vaccine is likely to hold up against several variants of concern, including the Delta variant, which is predicted to become the dominant ...

One thing we know for sure about SARS-CoV-2, the virus that causes COVID-19, is that it keeps changing. Since the start of the pandemic, we have seen several notable variants, including Alpha, Beta, ...

Questions are appearing on social media about how we know there is a rise in certain COVID-19 variants if individual tests cannot detect specific variants. The U.S. Centers of Disease Control and ...

A medical worker inoculates an old woman with a dose of COVID-19 vaccine in Neikeng Town in Jinjiang City, southeast China's Fujian Province on Aug. 31, 2021. China is experiencing yet another ...