Again, the studies that have looked at cohorts of people infected to estimate incidence have not had this strict of a definition of fatigue or depression. Cert

Again, the studies that have looked at cohorts of people infected to estimate incidence have not had this strict of a definition of fatigue or depression. Certainly some people have these symptoms and they are very very likely to be from the COVID infection itself. But other people have more minor symptoms and these are included in many estimates of post-COVID syndrome, and discerning whether they were related at all to COVID and caused by COVID itself is more complicated, because if you were to screen a normal population with these criteria you'd find a fair incidence of these symptoms.