What is known about the XBB.1.5 Variation of the new Covid?
In the US, where it is quickly spreading, a new Covid sub-variant is raising some alarm. It is yet another descendant of the Omicron Covid form, which is now widespread throughout the world and which itself followed the previous Alpha, Beta, Gamma, and Delta variations. Since it first appeared in late 2021, Omicron has exceeded […]