Oh, I don't think we've answered your egg question yet. You can eat the eggs as long as you haven't treated with antibiotics. If they're on antibiotics, or even medicated food, then you shouldn't eat the eggs. The danger, according to what I've read, is that you would be ingesting the antibiotics as well, and it's not a good idea to ingest antibiotics if you aren't sick or don't need them. It causes your body to react adversely if you ever do need antibiotics (like you'd build up an immunity or something and then they wouldn't work, or you might kill off beneficial bacterias normally present in your own body and then not be able to fight off an infection down the road.)
But as for eating the eggs of sick chickens, even after mine were deemed to have MG, the dept. of ag told me I could eat the eggs. The respiratory diseases that plague our chickens don't affect us humans. For a while I considered keeping mine as a "closed flock" and keeping the survivors of the MG, and I was planning to eat their eggs. Then I realized that every time they got stressed, they might break out with an active case of MG again, and I just didn't want to keep treating sick chickens for years, never being able to get any more.