I'm planning to order about 45 chicks from two different hatcheries this spring. I'll be combining an order with a friend because I only want 17 chicks from a certain hatchery, not their 25 minimum. And we can save on shipping. But, my friend has always had her chicks vaccinated for Mareks. Except she bought 7 chicks from me last summer and raised them in her chick pen that she always raises her chicks in, and she didn't lose any of them to Mareks. And when her broody hens hatch chicks she doesn't lose any of them to Mareks either. So I'm wondering if it's necessary for her to vaccinate her chicks or not? I don't think she has to, but I'd feel awful if she didn't vaccinate per my request, and then lost most or all of her chicks. Would hatchery chicks be more prone to Mareks than hatched-at-home chicks? I don't want my chicks vaccinated because I believe it's a pointless expense. I've hatched and raised about 50 birds in the last couple years (and didn't vaccinate them) and never had a problem. But I wanted to double check here before I ask her about not vaccinating any of her chicks.