Kay Mullis own word on PCR tests. The invention of the polymerase chain reaction technique earned him the Nobel Prize in Chemistry in 1993. Read more about him here: https://21stcenturywire.com/2021/03/03/dr-kary-mullis-where-covid-meets-cancel-culture/ He died of pneumonia on August 7, 2019 https://www.the-scientist.com/news-opinion/kary-mullis--inventor-of-the-pcr-technique--dies-66256 27 November, 2020 Covid PCR test reliability doubtful – Portugal judges https://www.theportugalnews.com/news/2020-11-27/covid-pcr-test-reliability-doubtful-portugal-judges/56962 December 17, 2020 The WHO finally admits COVID PCR test has a problem: https://principia-scientific.com/who-finally-admits-covid19-pcr-test-has-a-problem/