my friend got COVID early on, abroad in Jan 2020.
She still has "long covid"..........
I also caught Covid in the spring of 2020, and experienced long covid symptoms. Every time they subsided, I caught a new variant. Everyone in my family has recovered very well and quickly from Covid, but it for some strange reason, just keeps lingering on with mild symptoms.
My wife has a co-worker that is experiencing Long-haul from the vaccine. Thankfully, it should subside. Dr. Bruce Patterson has addressed this issue quite extensively. IIRC, it has to do with the body clearing the spike protein.