>> when might this drug be made available? >> yeah. >> right now it's in front of the u.s. food and drug administration. then it has to go through other regulatory hurdles globally as well. now, an important aspect of that, brianna is unlike mrna vaccines, which are complicated to make and it may take years for some of the big vaccine manufacturers globally to make it, this one is much easier to reproduce. and so i think merck got ahead of the game. because they remembered the experience with antiretroviral drugs, indian manufacturer sipla said we will not wait for patents. we can make this on our own. i think merck realizes it's simple enough molecule to make that they will get ahead of the curve on that, which is great. but that also raises the problem of the fact that it could be made available easily.