I remind people of that often, stating that as awful as this strain of virus is, we are fortunate that it has the low mortality rate it does. It could have possibly started as something much worse. The Spanish flu mutated somewhere along its evolution into a strain magnitudes more deadly than the original. I understand that it is possible for SARS cov2 to do something similar, or it could mutate into a less dangerous strain, or possibly remain somewhat consistent. Just to be clear, my post was referring to the disease that I contracted weeks ago, and how a couple of its original symptoms have resurfaced a week after they appeared to have gone. This seems to be a common pattern in people recovering from covid-19. Your response is an interesting fact, but doesn't seem germane to my post...