dominant strain here in the u.s. here's what she said. >> it might. we don't yet know. what we do know is that early data and even mutation data are telling us that this may well be a more transmissible variant than delta. and so this is going to take some time to sort out. we are prepared, though. we are doing genomic sequencing in all these states. >> what did you make of that? >> we are doing a lot more genoming sequencing but most of these variants are typically found in other places first. a large part of that is we're still not doing enough overall testing. pcr tests. >> in the united states. >> in the united states. a million to a million and a half a day. at one point we were talking about 20 or 30 million a day. maybe we'll get to that point. dr. fauci thinks we will. if you look at what's happened in south africa specifically, this tells the tale because you look at the graph there. beta was also a dominant strain for a while in south africa but