tala ingraham was a nurse in this icu a week ago, but was infected by a patient and is now under the care of her colleagues. >> it's sad because these -- these patients when they come in, if you don't hug your family member like right then, who's to say you're going to be able to hug them again. we don't know, and that's -- that's probably one of the hardest things. >> reporter: the doctors here have opened a new wing for more coronavirus patients, and the next few weeks are going to be critical. alex crawford sky news in houston, texas. >> here with me now is someone who's been studying coronavirus and the path it's taken in the united states since the beginning of the pandemic. mark lipsich, he's a professor of epidemiology at harvard's skl of public health. thank you for being with us. i think what we need to do is hear from more people like you on an ongoing basis to give us an evaluation of why we are where we are on july 3rd. we are seeing things in houston, in texas, in arizona, and to some degree in florida and california that reflects what we went through two and a half to t