Published in the Journal of Medical Virology, it was admitted that the evidence for “SARS-COV-2” was unable to satisfy Koch’s Postulates or even a modified version proposed by Friedricks and Relman. In other words, causality was never proven.
https://onlinelibrary.wiley.com/doi/10.1002/jmv.25678
This was backed up by two of the foundational papers for “SARS-COV-2.”