oh man that aint good, my sister got it back in 2020 and is still feeling the side effects
Oh yeah the 2020 original stain was insane, I got that myself in march before the name covid was even a thing. It was brutal and you could feel how dangerous it was . I later got omicron which was just a joke in comparison. I did also later get one other stain, not sure what it was called but it had the chills and was miserable, but lacked anything that made it feel dangerous like the 2020 stain.
Each stain is very different. Some have really killing power, others are just suck and others are just a hm guess I have somthing. They are far from equal. But yeah the 2020 stain left effects that never went away for me as well.