The critique against PCR testing is further strengthened by a November 20, 2020, study27 in Nature Communications, which found no viable virus in PCR-positive cases at all. The study evaluated data from 9,865,404 residents of Wuhan, China, who had undergone PCR testing between May 14 and June 1, 2020.
A total of 300 tested positive but had no symptoms. Of the 34,424 people with a history of COVID-19, 107 tested positive a second time. Yet, when they did virus cultures on these 407 individuals who had tested positive (either for the first or second time), no live virus was found in any of them!