In response to Amy: Yes, all the studies I mentioned are published. Everything is not on the web. I keep print copies of everything I read over the years concerning issues that affect my patients. You mentioned a huge list of problems supposedly caused by vaccinations, and yet most of those have not been demonstrated in any significant incidence. In response to Chris Lloyd: I don't know what parvo vaccine you are using if it's only good for six months, but that certainly is not true of most of them. In twenty-two years and vaccinating thousands of dogs I have only seen two cases of parvo in dogs who were appropriately vaccinated, and I only vaccinate once yearly. In response to Phyllis Taber: Thanks for your kind words. In the case of your ferret, I would not vaccinate your ferret again until or unless a new vaccine were to be approved that may not cause a reaction. You just need to be very careful about who and what this ferret is exposed to. To continue to vaccinate a known severe reactor is just not reasonable. Unfortunately, my practice leaves me very little time for lengthy email debates. The best I can do is tell you that my vaccine recommendations are decided upon based on the patient's circumstances, twenty-plus years of experience, and keeping up with the literature as well as possible. Veterinary medicine is what I do, and I think I do it pretty well, overall. If someone doesn't want to take my recommendations, then don't. I can't spend all my time defending every aspect of every decision I make. Deborah Kemmerer DVM [Posted in FML issue 4101]