Doctors in Wuhan first identified the pandemic due to the unusually high volume of sick and dying patients, not by any sophisticated means. There's no public evidence that the WIV was involved in the initial discovery of the novel virus. Zhang Yong-Zhen was the first to publish a genome, in Shanghai.

If the disease had already been global, then retrospective testing of wastewater samples, nasal swabs obtained for other purposes like the Seattle Flu Study, banked blood, and other stored samples would have revealed that. There were some scattered claims that it did, but none that held up very well under scrutiny.