(03 September 2020)

At the moment it seems that a polymerase chain reaction (PCR) positive result is the only criterion required for a case to be recognised.

“In any other disease we would have a clearly defined specification that would usually involve signs, symptoms, and a test result,” says Carl Heneghan, director of the Centre for Evidence Based Medicine at the University of Oxford and the editor of BMJ Evidence-Based Medicine. “We are moving into a biotech world where the norms of clinical reasoning are going out of the window. A PCR test does not equal covid-19; it should not, but in some definitions it does.”