variants of interest. overall we held from the national institutes of health director, dr. collins, he said these variants, they're watching them closely. have a listen. >> at nih, working with fda and cdc, we have a vigorous team that looks at every knew emerging variant to see what would its effect be in terms of the vaccine. will the vaccine work against this one? so far so good. we don't have anxieties yet about delta or lambda or any others working out there. >> so you see, he said they don't have anxieties yet. again, delta is the biggest concern for us in the u.s. >> jacqueline howard, thank you very much. let's take you to texas and the hospital in houston is so strapped for space, there's a surge of covid patients there that is now requiring them to put up tents for overflow. on top of that, texas hospitals are suffering from a severe