When is a COVID mutation a new variant and when is it a subvariant? And what is a recombinant?
We’ve all become familiar with virus mutations throughout the pandemic, and we can probably all list COVID variants, such as Alpha, Delta, and Omicron. But now we hear more and more about subvariants, as Omicron mutates into Omicron BA.2, Omicron BA.4, Omicron XE and more. We know that the virus is mutating as it spreads, …