Here’s What We Know About Omicron XE — The New Covid Variant Found In The U.K.

Topline A new Covid-19 variant that combines two different omicron strains has been identified in the United Kingdom, and it could be the fastest-spreading Covid variant yet, according to early data f...

Here’s What We Know About ‘Stealth’ Omicron BA.2 — The More Infectious Subvariant Better Able To Infect Vaccinated People

Topline A close relative of the omicron coronavirus variant—known as BA.2 and dubbed “stealth omicron” by some scientists—is more infectious and better at infecting vaccinated people, a Danish study h...