A new and slightly changed version of the Delta coronavirus variant is spreading in a number of countries including the United Kingdom, United States and India, health officials say. This strain, ...

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

India confirmed about 50,000 new coronavirus infections today. That is a fraction of what it was seeing at its peak last month. So it looks like the world's biggest and deadliest COVID-19 wave may now ...

The only foreign scientist in the Wuhan lab says a ‘lab leak’ is unlikely, but supports an investigation to make sure Highly contagious Delta coronavirus variant spawns Delta-plus Coronavirus in ...

Health officials from South Korea’s Disease Control and Prevention Agency reported on Tuesday that they had confirmed an additional two cases of a new, worrying coronavirus variant. So far, relatively ...

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 ...

As evidence mounts that the omicron variant is less deadly than prior COVID-19 strains, one oft-cited explanation is that viruses always evolve to become less virulent over time. The problem, experts ...