restrictions today. scores of other countries have done exactly the same in order to try at least to stop this variant from spreading in all these countries. >> claudio, thank you. i know that president biden has talked about this. he has talked about the concern, based off this variant. i want to pull up what president biden had to say. i think his statement came in, in the last 45 minutes or so. he is essentially calling on the rest of the world to up their donations to vaccinations around the world because of variants like this one, dr. susannah hill. give us the gut check, the reality check here. put this into context. this is not nearly close to being as widespread as the delta variant which we've talked about over many months here. how concerned should people in this country be about it? . >> yes. well, halle, there are a couple