First coronavirus vaccine. Joining us now, cnn chief medical correspondent dr. Sanjay gupta and medical analyst dr. Rochelle rolinski from mass general hospital. Sanj sanjay, when we learn theres been a 90 increase in coronavirus cases among children the last four weeks, that is a lot. It is a huge increase. You saw the raw number of about 100,000 new cases the last two weeks of july, and it really does cause concerns as we are in some areas reopening schools. Yeah, no question about it, john. I mean, i think the number of children becoming infected is increasing, and its increasing at a more rapid pace. I think theres two things that are happening here. I could just tell you a little bit from reporting but also from personal experience. Up until recently, its been harder to get the younger people tested at all. You had to be symptomatic to get tested. It was mostly adults who were symptomatic. So i think the increase in testing among younger people is driving some of this. But i think