vaccinated needs to talk to them and share their concerns. and recognize that, really, the largest risk for getting this infection, having severe infection and dying from this infection is not getting vaccinated. and it's so tragic when you have something that's clearly so preventable. >> and if you are eligible, get a booster shot. that's so critically important as well. new data does show, dr. besser, that the coronavirus positivity rate in south africa has jumped 24% since the omicron variant was detected. only two weeks ago. dr. fauci says early data on the severity of this variant is a bit encouraging. a bit encouraging. but just how worried should we be? >> well, you know, i think that the general approach to this has been the right one. you go at it hard. go at it strong. you take serious measures to try and protect communities, and then if the data shows that you can back off, then you start to