What is the new COVID-19 variant BA.2, and will it cause another wave of infections in the US?
World | March 24, 2022 15:53 ISTBA.2 is the latest subvariant of omicron, the dominant strain of the SARS-CoV-2 virus that causes COVID-19. Here is everything you need to know about this new variant, that caused a surge in infections in the US.