Dr. Williams: What is your opinion regarding vaccinating against CDV in an ill ferret? Specifically, one that hasn't officially been diagnosed with anything in particular. I ask this mostly for Girlie's sake (since you are aware of her situation), but feel it could be helpful to others as well. Hers is due this month. I pre-treat w/ Children's Benadryl and separate it from the rabies vaccination by four to six weeks. What I'm most concerned about is whether or not the vaccination could have any effect on her current condition. Could it weaken her immune system and/or cause some sort of hyper allergic/sensitivity reaction (since a food or other allergy has been considered in her situation)? I completely agree with vaccinating against this horrible disease, but don't want to unknowingly cause her more problems. Your opinion is both highly respected and greatly appreciated. Sincerely, Sonya [Posted in FML issue 3242]