Inventor of PCR Dr. Kary Mullis explained PCR Test should not be used to detect COVID-19 Virus

The inventor explained in simple form what PCR is for. He designed it to separate DNA strands, which are then copied by a heat-stable polymerace.

Repeating the cycle many times leads to an exponential increase in the quantity of DNA.

In this way, even traces of DNA can be amplified into amounts that can be easily sequenced or quantified

http://stateofthenation.co/?p=30925