This 21-year-old thought he had overcome a mild case of COVID-19. Then he went into organ failure
https://www.kcci.com/article/this-21-year-old-thought-he-had-overcome-a-mild-case-of-covid-19-then-he-went-into-organ-failure-1/33573934#
Hospital chief warns even mild COVID-19 cases can lead to chronic health problems
https://www.kcci.com/article/nebraska-medicine-chief-executive-discusses-possible-severe-consequences-caused-by-covid-19/33573570