A highly-transmissible mutation of the omicron COVID variant known as BA.5 is raising concerns globally as it continues to gain traction in several countries,.
LOS ANGELES, July 11 (Xinhua) The latest and most contagious versions of Omicron subvariants, known as BA.5 and BA.4, have accounted for over 70 percent of new COVID-19 infections in the United States, leading to new surge in cases and hospitalizations nationwide.
© Provided by Xinhua The two Omicron subvariants, BA.5 and BA.4, are more contagious than earlier variants of Omicron, and also appear to evade protect
The fastest-spreading COVID-19 subvariants yet, the two latest versions of omicron appear to evade protection from vaccines and previous infections more easily.