Thomas Cowan, MD, explains that the PCR-test is a surrogate test, not a real test. The PCR-test allows the tester to choose which level of viral load he/she will infer as the threshold for being 'infectious'. That is why many countries have lots of 'infectious cases' - the countries with a so-called 'casedemic' - while other countries have basically none - as the latter have chosen a more stringent rule on which PCR-test levels should be called 'infectious'. Thomas Cowan is a medical doctor and author of several books about medicine, including nutrition, anthroposophical medicine and herbal medicine. He is the author of Human Heart, Cosmic Heart, The Fourfold Path to Healing, and The Nourishing Traditions Book of Baby and Child Care. He has served as vice president of the Physicians Association for Anthroposophic Medicine and is founding board member of the Weston A. Price Foundation.