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 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.

The delta variant has emerged as the dominant strain of the novel coronavirus in the United States, according to updated data from the Centers for Disease Control and Prevention (CDC). The CDC’s ...

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 ...

July 22 (Reuters) - U.S. laboratory Quest Diagnostics Inc (DGX.N), opens new tab said on Thursday demand for COVID-19 testing had increased since the end of June as the more infectious Delta variant ...