and the uk is meant to open up fully in the middle of june. there are some medical officials saying, maybe that's not such great idea, so the government is weighing that carefully. but everybody looking at these new variants as the doctor was suggesting, and i was just wondering, dr. gottlieb, so far, we haven't had a variant that looks like it's escaped the vaccine. can we start feeling a little bit more confident that there won't be a variant like that? i know in vietnam at the moment they're looking at a variant that is a mixture of the uk-1 and the indian-1, or do you think it's only a matter of time that there is a variant in the world and asia is seeing quite a big spike at the moment that does escape the vaccine and that would be seriously worrying to everybody here in the u.s.. >> it's hard to know. right now, you're right, we haven't seen variants that have fully defeated the vaccine. i think that we could have a higher degree of confidence that