Omicron subvariant BA.2 now the dominant Covid strain in US
Omicron subvariant BA.2 is now the dominant strain of Covid-19 in the US (Picture: Getty Images)The Omicron subvariant BA.2 has become the dominant coronavirus strain in the US, new Centers for Disease Control and Prevention (CDC) data shows. BA.2 accounted for an estimated 54.9% of new Covid-19 infections...