>> reporter: former president trump made a comment that it started in the wuhan's virology lab. this week three sources familiar with the matter tells cnn that biden also shutdown a trump's state department inquiry into the origins over concerns of the quality of the evidence. but now with newly reported intel, there were new questions of what china knew and when. the wall street journal reporting this week that a u.s. intel report found several researchers at the wuhan lab got so sick they had to go to the hospital in november 2019, that was weeks before china reported the first patient with covid-like symptoms to the w.h.o. it led mounting pressure on the biden administration to find