I try to raise my chickens as organically as possible - soy-free organic feed, my organic vegetable scraps, organic oatmeal and yogurt, you name it. They eat better than most PEOPLE do. And YES I did vaccinate - against Marek's and for Coccidiosis. I figured this was better than the medicated feed, and I had the hatchery do it when I bought them as day-olds.
I figure, I'm going to raise my kids on good, organic food - but I'm still going to vaccinate them for polio and hepatitis.