I looked abit, but didn't really find a thread yet. I had half my guinea's die of Mareks that I got from a backyard breeder. Everything I have ever gotten from a hatchery has been done. Just wondering if I should vaccinate any future chicks, including ones I will hatch from an incubator one day (Yes, I am going to get me one), if anyone knows how expensive the vaccine is, and how to do it??