These people came out of hospital. I think they have been hit comparatively hard. I guess (!) we see some result of false-positive test results here, together with coinfection with influenca or even the common flu.
Hospital cases are all lower respiratory tract, but even just within that group there is huge variety. It starts from 'under observation' for a day, then goes through needed oxygen for a day or two, to progressively worse symptoms, cytokine storms, intubation, organ failure and finally death, from a couple of different causes, such as lung damage (the vast majority of the cases) or heart failure (1 in 5). It can reverse at any point during that trajectory, and can also go back-and-forth.
And the speed of onset, progression and severity can change dramatically from person to person.
Finally, in many cases of recovery there is apparently lasting damage.
And the speed of onset, progression and severity can change dramatically from person to person.
Finally, in many cases of recovery there is apparently lasting damage.