I am not sure, but I have noticed one strange contradiction on the forum. On the one hand, lots of folks talk about how healthy their unvaxed kids are and that they have never been sick, and then at other times, talk about how immunizations interfere with the body "learning" to fight diseases. SO it's kind of incongruous. No one wants their kid/baby sick, but if part of the picture of good health IS in fact having chances to fight childhood diseases, then somewhat logically, a child that has never been ill might seem perfectly healthy but might not be as healthy as the next child that has gotten sick simply because the other child has had opportunities to practice illness because their immune system is so good. But where is the proof of that? I always wonder just how people know that an immune system is good and if the only criteria is "never been sick." The assumption seems to be that the healthy child has been exposed to and fought off disease before affecting the body. Or that they have a strong immune system. Might not be any of those cases though. But this ties in to the whole germ theory concept, just what the immune system needs and what it does or doesn't do... hard to piece it apart I think.
Is a child who has never been sick before necessarily healthier than a child that has been sick and recovered successfully from illness?
As to the last question, I really don't know. I guess the kid who hasn't been sick must have an immune system that is more successful at preventing clinical illness, since there's no way a child can actually avoid all things capable of causing illness...unless they live in a sterile environment, lol. There is a genetic component to all that, so I'm sure some kids luck out in that department. My kid almost never gets GI things, but she gets an average amount of colds. Some kids almost never get colds, but they get an average number of GI things. Surely some kids luck out and never have symptoms of either. Must be nice for their parents, but I really don't think it's because their kids are vaxed, unvaxed or because they're so much better at making sure their kids eat right (or whatever) than everyone else. Those things obviously help, but when we're talking about kids who never get sick, there has to be a LOT of luck involve.