[refurb]

Of course symptoms can wax and wane, but that's not what the grandparent claimed. They claimed a person would have zero Covid symptoms (and thus be excluded from the trial), which would skew the results.

As per the trial design, if a patient had any symptoms of Covid and a positive Covid test, then they could be included. And despite a battery of tests, there was no physiological difference between those patients and the controls who had never been infected with Covid.