All eyes are on the Delta variant that is now dominant in the United States as new Covid-19 cases rise week-to-week and the variant -- first identified in India and also known as B.1.617.2 -- accounts ...

As the delta COVID-19 variant continues to jeopardize progress against rising cases and hospitalizations around the world, the United States is shifting strategy when it comes to persuading ...

Since the CDC limits data reporting on breakthrough COVID-19 infections — those occurring among fully vaccinated people — to those that cause severe disease, mild or asymptomatic infections caused by ...

The World Health Organization urged vaccinated people around the world to continue to "be appropriately cautious" when it comes to the transmission of COVID-19, especially the rising delta variant.

The government is reportedly keeping a “close eye” on a descendant of the Covid Delta variant that is being seen in a growing number of cases sparking fears of a return to coronavirus restrictions.

The Centers for Disease Control and Prevention listed the COVID-19 delta variant as one of its "variants of concern" (VOCs) on June 15. According to the CDC, VOCs can be more contagious, more ...