Originally posted by Ex Finn. Friend on FB had a serious bout of difficulty breathing and high fever last November, lasted almost a month, doctors had no idea what was causing it.
All the symptoms match...
He probably was really sick but didn't have COVID. It seems as though COVID was present in China at that point, but hadn't really spread. The US has been back tracking and testing flu samples for COVID and also people with the sort of symptoms you describe for antibodies and they haven't turned up any cases before January. It isn't to say it couldn't have happened, but if he hadn't traveled to Wuhan, it probably wasn't that.
CDC: First COVID-19 Cases In the U.S. Throughout January | Time
There do seem to be a lot of people who had illnesses that resembled COVID and now think they had it -- just earlier than others said it was present. The thing to do for those folks is to go ahead and get antibody tested. There are lots of places doing that and most doctors can order them now, as well.