Two reasonable scenarios origin table.From early , public media perceptions shaped favor natural emergence scenario strong statements two scientific groups.These statements first examined critically been. “ We stand together strongly condemn conspiracy theories suggesting COVID-19 natural origin , ” group virologists others wrote Lancet February 19 , 2020 , really far soon anyone sure happened.Scientists “ overwhelmingly conclude coronavirus originated wildlife , ” said , stirring rallying call readers stand Chinese colleagues frontline fighting disease.Contrary letter writers ’ assertion , idea virus might escaped lab invoked accident , conspiracy.It surely needed explored , rejected hand.A defining mark good scientists go great pains distinguish know ’ know .