By September, Dr. Yan had abandoned caution. She appeared in the United States on Fox News making the unsubstantiated claim to millions that the coronavirus was a bio-weapon manufactured by China.
Overnight, Dr. Yan became a right-wing media sensation, with top advisers to President Trump and conservative pundits hailing her as a hero. Nearly as quickly, her interview was labeled on social media as containing “false information,” while scientists rejected her research as a polemic dressed up in jargon.
https://www.nytimes.com/2020/11/20/business/media/steve-bannon-china.html