But learned COVID-19 related coronaviruses , features already seen nature . `` There lots data lots evidence , well previous examples coming nature , '' said . `` We exactly zero evidence data connection lab . `` And Andersen , like prominent virologists , says ca n't completely rule possibility virus came lab , odds happening small.He says new coronavirus clearly originated nature , `` question . `` Conspiracy theory # 1 : Chinese bioweapon COVID-19 sufficiently unlike viruses created , making virus lab scratch would `` virtually impossible , '' said Stanley Perlman , MD , PhD , professor microbiology immunology pediatric infectious diseases University Iowa Iowa City . `` I n't think know enough coronaviruses—or virus—to able deliberately make virus release , '' said .