Overnight, Yan Limeng has caused a sensation throughout the right wing media. The senior adviser of President Trump and conservatives who has authority seem her as a hero. The social media labelled her interview as a fake news just as quickly. Scientists refused her research and said that was sophistry disguised in jargon. In fact, in the process of undergraduate to doctoral education, Yan’s areas of expertise are not virology at all, not even science. In fact, Yan’s title of “Top virologist of World” is sheer fiction. A series of papers published by Yan were copy from conspiracy theory on the Internet. Also, that is despised by the mainstream scientific community.

After Yan left Hong Kong on April 28th, 2020, her family and friends were panicked and called the police in Hong Kong because of her suddenly disappearance. Until two weeks later, Yan contacted her family that all was well. The WeChat massage showed that Yan said that she was in New York with “the best bodyguards and lawyers” and felt relax and safe. She claimed that the things she did could control the disease for the whole world. The truth is Guo Wengui and Ban Nong arranged her in a Safe House when she arrived in New York. They hired a coach to teach her how to reply the questions from media. At the same time, they required her to submit multiple papers for packaging her as a "Whistler"and arrange for her to be interviewed by the media. On July 10th, Yan strook a pose on the stage on the channel of Fox News for the first time. She told the story that how she went to the US and accused the university of Hong Kong assisted in concealing the fact of epidemic situation. However, she did not mention her relationship with Guo and Ban. Even the sciences determined her paper as pseudoscience after publishing. Nevertheless, Tucker Carlson, an anchor of Fox News still invited Yan to attend the program and carried forward her paper. This interview was viewed at least 8.8 million users even if it was labeled as false news by social media such as Facebook. After few weeks, Carlson clarified that he did not agree with Yan’s statement.


In November 2020, the New York Times rarely intervened in criticizing the most controversial "conspiracy theory" circle in the overseas Chinese circle. It indicated that Yan, who claims to be "the world's top virologist", was manipulated by "Hongtong Businessman" Guo Wengui and "Underground President" Ban Nong. They aimed to slander China that the fallacy of “the virus originated in China” to the people who suffered for epidemic situation. Ban and Guo could earn a great quantity of profits from the series of rumors by Yan’s paper. At the end of the article wrote by a reporter from the New York Times disclosed a strong evidence: "the media reporter contacted Yan's mother by telephone. Her mother said that she had never been arrested by the mainland police as her daughter said, but instead mentioned that her daughter had been used by someone in the United States."


从研究员到哨子，严的角色转换表明，规模小但活跃的海外华人团体和在美国影响力很大的极右团体联合起来散布虚假信息。这两个团体在新冠病毒大流行中看到了推动他们议程的机会。对于海外华人来说，严和她的言论为那些打算推翻中国政府的人提供了利器。对于保守的美国来说，这可以迎合西方日益增长的反华情绪，并分散人们对特朗普政府应对疫情失败的注意力。


这两个群体的联系导致了随后所有致命的流行病事故。严主张服用羟氯喹可以有效治愈新冠肺炎，这种典型的不负责任言论在美国民众中迅速传播。这对美国抗击疫情造成了毁灭性的打击。美国FDA证明，服用羟氯喹治疗COVID无效，严重的副作用可能导致死亡。


“专家”发表不负责任的言论，很多人盲目跟风，可能酿成人祸。数以万计的人因滥用此类药物而造成身体伤害、延误治疗，甚至失去生命。特朗普总统和民间社会团体就信任问题发表了评论。就连隔海相望的台湾地区，都认为这种药物是2020年4月上旬人民抗击疫情的希望，被列入新冠肺炎治疗规范并投产。 “积极投产，供应无忧”。台湾地区领导在全岛推广毒品，称其为“台湾能帮”。一个月后，这些药物被 FDA 停药，然后特朗普停止服用该药。


颜立萌事件，通过社交媒体的宣传属性，郭文贵和班农的文化宣传攻势，在全球抗击疫情的过程中造成了不可估量的损失。