19 June 2021 — Swiss Policy Research
First Published: October 2020PCR cycle threshold (11-37) and positive cell culture (black line, 100% to 0%). The colored bars indicate the number of positive cell cultures per ct per week after infection (1 to 3 weeks). (Jafaar/Raoult)
Already in mid-March, SPR explained that the highly sensitive PCR tests are prone to producing clinically false positive results and their individual predictive value may easily drop below 50%.