Lots of idiots think they have a “strong immune” system, I don’t know how they determine that, other than not going back and forth to emergency rooms and on drugs of all kinds day in day out. Other than that MANY STRONG LOOKING …..DIED OF COVID, and MANY FRAIL OLD PEOPLE SURVIVED IT WITH NO ISSUES. Covid is not about strong immune systems, alone, it also is about how it interacts with all those cells and sometimes it wins no matter how strong you feel, whether young or old.
If you end up on a ventilator and survive it, it is not because your immune system was strong. It was assisted by all the drugs and breathing they gave you, otherwise YOU’D be DEAD! Your immune system HAD FAILED!