CDC director Rochelle Walensky told the US Senate that the highly transmissible variant is now the dominant strain in the United States.

The proportion was estimated at approximately 3% in late May. A highly contagious variant of the novel coronavirus that was initially identified in India now accounts for about 58% of all COVID-19 ...

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 ...

Reported COVID-19 cases in the U.S. are no longer dropping and began to plateau around June 8, according to CDC data. 1. The U.S. vaccination campaign has slowed, and nearly a third of Americans are ...

Estimates show the variant accounts for over 51% of all new cases nationwide. A highly contagious variant of the novel coronavirus that was initially identified in India is now the dominant strain in ...

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 ...

PHILADELPHIA (WPVI) -- New numbers are shedding light on just how quickly the Delta variant of COVID-19 is spreading in the United States. The more contagious Delta variant now makes up 83% of ...

A survey for the Wall Street Journal found small business confidence is at its lowest level since March as COVID-19 cases rise.

COVID-19 vaccination before or during pregnancy was linked to lower risk for severe maternal disease in the delta or omicron variant periods, ...

The COVID-19 vaccination offers protective maternal and newborn health benefits for mothers who develop SARS-CoV-2 infection ...

While the delta COVID-19 variant is the dominant strain in the U.S., it’s now officially the dominant strain worldwide “by far,” officials from the World Health Organization said during a Sept. 21 ...