当地时间5月4日，针对美国总统特朗普和国务卿蓬佩奥所谓 “新冠肺炎病毒来自武汉病毒研究所”的言论，世卫组织卫生紧急项目负责人迈克尔·瑞安表示，由于美方并未提供相关证据，因此世卫组织认为这种言论纯属臆测。
世卫组织卫生紧急项目技术主管玛丽亚·范·科霍夫表示，冠状病毒一般在蝙蝠中传播，目前约15000个完整的病毒基因序列都显示新冠肺炎病毒非人造。
The World Health Organization (WHO) said on Monday that Washington had provided no evidence to support "speculative" claims by the U.S. president that the new coronavirus originated in a Chinese lab.
"We have not received any data or specific evidence from the United States government relating to the purported origin of the virus – so from our perspective, this remains speculative," WHO emergencies director Michael Ryan told a virtual briefing.
WHO expert Maria Van Kerkhove stressed during Monday's briefing that there were some 15,000 full genome sequences of the novel coronavirus available, and "from all of the evidence that we have seen ... this virus is of natural origin."
While coronaviruses generally originate in bats, both Van Kerkhove and Ryan stressed the importance of discovering how the virus that causes COVID-19 crossed over to humans, and what animal served as an "intermediary host" along the way.
美国政府顶级传染病专家安东尼·福奇在接受《国家地理》采访时表示，没有科学证据证明冠状病毒是由中国实验室人为制造的。同时，福奇也否认了“有人在野外发现病毒，将病毒带回实验室后导致泄露”这个说法。在采访中，福奇驳斥了政客和专家近期关于病毒的讨论，认为这种讨论是“循环论证”。
Dr. Anthony Fauci, a key member of the White House coronavirus task force and director of the U.S. National Institute of Allergy and Infectious Diseases, said the best evidence shows the virus behind the pandemic was not made in a lab in China in a conversation Monday with National Geographic.
"If you look at the evolution of the virus in bats, and what's out there now is very, very strongly leaning toward this (virus) could not have been artificially or deliberately manipulated," Fauci said.
He shot down the discussion that has been raging among politicians and pundits, calling it "a circular argument." Based on the scientific evidence, Fauci also doesn't entertain an alternate theory – that someone found the coronavirus in the wild, brought it to a lab, and then it accidentally escaped, according to National Geographic.
CNN援引内部人士消息称，五眼联盟情报显示，新冠病毒“极不可能”是因实验室事故而流出。该情报不仅与美总统特朗普和美国务卿蓬佩奥的论调截然相反，更会令特朗普政府倍感压力，因为证据难寻。
Intelligence shared among Five Eyes nations indicates it is "highly unlikely" that the coronavirus was spread as a result of an accident in a laboratory, CNN reported Tuesday, noting the two Western officials who cited the intelligence assessment that appears to contradict claims by U.S. President Donald Trump and Secretary of State Mike Pompeo.
"It is highly likely it was naturally occurring and that the human infection was from natural human and animal interaction," one of the officials said. The Five Eyes is an intelligence alliance made up of the United States, the United Kingdom, Canada, Australia and New Zealand.
尽管如此，一些美国政客却散布所谓新冠病毒源于武汉病毒研究所等谣言，多次向中国泼脏水，并施压胁迫世卫组织。
5月3日，美国国务卿蓬佩奥在接受美国广播公司采访时宣称“有大量证据显示（病毒）就是来自武汉实验室”。美国总统特朗普日前在白宫记者会上也声称看到过“新冠病毒源于中国实验室的证据”，却不提证据在哪。
Despite the increasing number of conclusions reached by scientists across the world that the novel coronavirus originated naturally, many politicians in the United States have been stigmatizing China by reciting lies and spreading rumors, claiming that it was created in a lab or was man-made.
On May 3, U.S. Secretary of State Mike Pompeo claimed in an interview that there was "enormous evidence" linking the origins of COVID-19 to a lab in Wuhan, the Chinese city hit hardest by the virus. President Donald Trump also stated that he had seen evidence supporting this theory during a press briefing at the White House. However, when asked what it was, he said, "I can't tell you that."
4月29日，蓬佩奥诋毁世卫组织在疫情防控上是“失败的”，并威胁将对其进行审查。他此前还称，世卫组织需进行“结构性调整”以改正其“缺陷”， 美国不排除要求更换世卫组织负责人，甚至可能永远不会恢复对该组织的资助。
On April 29, Pompeo lashed out at the WHO during a daily press conference, saying: "It failed in its mission here, and so we're conducting a review to figure out how best to use American taxpayer money to deliver real outcomes."
On April 8, when asked about U.S. donations to the WHO, Pompeo claimed that they're reevaluating their funding with respect to the WHO, as "it hasn’t accomplished what it was intended to deliver."
3月24日，在接受一档广播节目访谈时，他指责中国在应对疫情方面不透明。而早在3月6日，蓬佩奥就公开对外使用“武汉病毒”的提法。
On March 24, Pompeo criticized that China delayed its response "in a way that has truly put thousands of lives at risk" during an interview with Tony Perkins of Washington Watch.
2019年4月15日，蓬佩奥在美国得克萨斯州A&M大学（得州农工大学）进行演讲，他回答学生提问时坦言，“我曾担任美国中央情报局（CIA）的局长。我们撒谎、我们欺骗、我们偷窃。我们还有完整的课程专门来教这些。”
此前，《华盛顿邮报》曾刊发评论文章，抨击蓬佩奥在疫情期间的表现，称其是“美国历史上最差国务卿之一”。
面对这次空前的全球危机，美政府本应致力于遏制疫情，并运用外交手段促进全球合作。但作为美国最高外交官，蓬佩奥的表现只能用“可悲”来形容。
瑞安在本周一的发布会上强调，不能将新冠病毒溯源这一问题视作“咄咄逼人的过失调查”，“那是政治问题，而不是科学问题”。他认为“基于科学的病毒溯源将造福全人类。”
Ryan warned that if questions about the virus origin were "projected as aggressive investigation of wrongdoing, than I believe that's much more difficult to deal with. That is a political issue."
"Science needs to be at the center," he said.
"If we have a science-based investigation and a science-based enquiry as to what the origin species and the intermediate species are, then that will benefit everybody on the planet."
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