From my understanding is it is not the precedent is what is the important lesson from the Canadian court. It is the failure of the health minister producing any actual evidence of Covid being “isolated”. So in plain terms that the pandemic actually exists. The subpoena of the health director and asked for proof this was isolated. Virus isolation is a very specific method for diagnosis of viral infection, but culture techniques need a week or more for completion and require specialized laboratory equipment and skills. So unless the chief medical officer had done this then there is no basis for any health reaction. So this is a template for others to follow. Not a legal precedent but a procedural order of operation.