Pamela, From what I understand (and I'm not positive that my understanding is correct), allergies to ferrets are somewhat rare, but not unheard of. Allergies to ferrets are confirmed through a blood test. I had one done about a year ago, and thankfully, I'm free of ferret allergies. I never spoke to my allergist regarding allergy shots for ferrets, but someone on this list had mentioned that her doctor made a special serum for her. Suzanna Donahue [Posted in FML issue 3306]