Your statement about the lack of correlation of disease severity and fatigue made me think of a few question. * What is the measure of disease severity? * Is

Your statement about the lack of correlation of disease severity and fatigue made me think of a few question. * What is the measure of disease severity? * Is there a correlation between measures of disease severity and anosmia in Covid-19? * Is there a correlation between disease severity of other viruses that trigger chronic fatigue symptoms and incidences of CFS? The anosmia question seems relevant if we assume that the virus damages the nervous system.