PCR Inventor Kary Mullis was awarded the Nobel Prize for Chemistry for his invention.
PCR Should not be used for Diagnosis
Kary Mullis has stated that any use of the PCR test beyond 20 cycles would produce false positives.
PCR cycles used for Covid-19 diagnosis
Despite the assurance of false positives beyond 20 cycles testing facilities around the world are using the PCR test at its maximum amplification of 40 - 45 cycles.
Other countries to be added.