The thing with flu shots is that they're always a guess. I don't think they should be mandatory unless you're living/working in close proximity to someone who is in one of those "high risk" groups. Otherwise, if you want it, get it, and if you don't, don't

And it aggravates me to no end, the people who refuse to vaccinate their kids. I think a vaccine for chicken pox is pretty silly, but MMR...

Oak, my mom had a similar inflammatory reaction to the hepatitis (A? B? I don't remember.) vaccine. That's the only one (apart from chicken pox, but I got that the normal way!) I didn't have. Presents a bit of a problem if I want to work with human tissue samples, though.