For one of my friends, it was the day after his first shot. Ended up in hospital for 5 days. My Mom, a month after her second shot. She's been in hospital 3 times since and having problems regulating blood pressure. Both of them ended up with heart issues.

I don't think anyone knows if everyone is clear after a period of time. Possibilities exist for Autoimmune Disorders to pop up. My 1st flu shot ever, I was 45. Bought into the guilt trip at my office. Four months later I ended up with autoimmune.

For one of my friends, it was the day after his first shot. Ended up in hospital for 5 days. My Mom, a month after second shot. She's been in hospital 3 times since. Both with heart issues.