BA.4, BA.5 variants sweeping South Africa have been detected in the U.S., with the potential to start another COVID wave | Fortune

BA.4, BA.5 variants sweeping South Africa have been detected in the U.S., with the potential to start another COVID wave | Fortune: Two new strains of COVID that appear to be more transmissible than even “stealth Omicron,” and that have the ability to evade antibodies from vaccination and prior infection, have arrived in the U.S.—and it could mean a new wave is coming.