How big a covid-19 wave could omicron subvariants BA.4 and BA.5 cause?
How big a covid-19 wave could omicron subvariants BA.4 and BA.5 cause?
Yet another covid-19 wave is beginning in Australia, the US and parts of Europe, with some evidence suggesting the BA.4 and BA.5 omicron subvariants are more severe and transmissible than their predecessors
Yet another covid-19 wave is beginning in Australia, the US and parts of Europe, with some evidence suggesting the BA.4 and BA.5 omicron subvariants are more severe and transmissible than their predecessors