that always felt just a little bit out of reach. but really it does not feel that way anymore. this weekend we also saw evidence of that, crowds back in arenas. including here in new york city where 15,000 fans were in madison square garden to watch the knicks play-off game. just hearing the roar of a crowd is a start willing amazing sensation. this great news comes as an intelligence report is going to fuel further debate. they find several scientists in a lab in wuhan china were hospitalized with an unknown illness in november of 2019. that is a month before they reported the first cases of covid-19. joining me right now is david culver in shanghai with more on this intelligence report. and what you can take from it can't extrapolate, can't what we do with it now. what are you learning david? >> it doesn't bring us right to the origin of this virus which i know most folks are trying to figure out. and they would want to know. especially the w.h.o. experts