about becoming pregnant probably shouldn't take advantage of this. we don't have enough information yet. so not quite as big a deal as we thought maybe a week ago. >> you have to take the pill within five days of being infected. that makes testing key. are you concerned about that because the u.s. has had a lot of trouble getting testing up to speed? >> yeah, you bet, don. we haven't done nearly enough testing. the europeans have testing widely and freely available. we need much more of that. i think this administration is going to promote much more widespread testing, and it would be certainly useful as an additional intervention for us to get ahead of covid. >> you know, as well they should be, a lot of americans are worried about this new variant. if you've been vaccinated and boosted, is there anything else that you should be doing right now? i guess masking up as well. >> well, the folks who haven't