Hi Melanee The only vaccine used for ferrets in Holland is Nobivac puppy DP, It's the only one considered not dangerous and we have never seen bad reactions to it, so I wonder why your vet thinks otherwise. If he wants to make sure, ask him to get in touch with Nico Schoemaker or Hanneke Roest, both well known ferret vets, I can supply their e addresses if he cannot find them on internet. Regards Stephenie [Posted in FML 7818]