I had what I thought was the COVID JAN 2020. I had various symptoms throughout the year. Mostly fatigue and short of breath. I just finished up the vaccines and heading for two weeks out. I am feeling much better and taking on more work. It makes sense to me that if the body has a problem recognizing COVID it would have a rough time building resistance against the COVID. If vaccine work like they describe by training the immune system I am all for it. The actual vaccine is not joke. The second dose rocks your world for a few days.