Here's why NO VIRUSES HAVE BEEN ISOLATED (IDENTIFIED) - EVER!

Koch's postulates are a set of criteria that must be met in order to establish that a microorganism is the cause of a given disease. It is required that the microorganism must be able to be isolated and produced in a pure culture in all cases of the disease. Furthermore, the microorganism must not occur in other diseases.
The isolated microorganism must be capable of causing the disease in experimental animals, and the microorganism must be detectable in them.

The criteria were originally developed by the German anatomist Friedrich Henle (1809–85), but later reformulated by the German physician Robert Koch (1843–1910).
They were at one time very fruitful in proving causal links to infectious diseases. In recent times, they have been revised and nuanced, including by Alfred S. Evans in 1976.

Andrew Kaufman MD credentials:
-Bachelors of Science in Biology MIT
-Doctor of Medicine, Medical University of South Carolina
-Psychiatry Residency, Duke University
- Former Medical Instructor of Hematology and Oncology, Medical University of South Carolina
- Former Assistant Professor of Psychiatry, SUNY Upstate Medical University
- Licensed and Board Certified in Psychiatry and Forensic Psychiatry