The following is a quote from the article by Celia Farber listed at:
The Corona Simulation Machine: Why the Inventor of The “Corona PCR Test” Would Have Warned Us Not To Use It To Detect A Virus.
PCR is a needle in a haystack technology that can be extremely misleading in “the diagnosis of infectious diseases…Dr. David Rasnick, bio-chemist, protease developer, and former founder of an EM lab called Viral Forensics told me. “You don’t start with testing; you start with listening to the lungs. I’m skeptical that a PRC test is ever true. It’s a great scientific research tool. It’s a horrible tool for clinical medicine.”