但报导也指出病毒的源头是否与实验室相关仍存争议。美国罗格斯大学(Rutgers University)生物学家理埃布莱特(Richard H. Ebright)对BBC表示,根据目前对病毒的基因组测序,没有任何证据表明该病毒经过人工改造,但也不代表著可以「完全排除」疫情病毒由於实验室事故进入人群的可能性。
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