Hi I have heard that the Vanguard Seven vaccine should not be used on ferrets. Is this true? If so then for what reason is this vaccine is contraindicated? My local vet uses Vanguard Seven but admits that he has not used it on ferrets in some time. Although the ferts are due their vaccinations they have been withheld pending further information on the vaccine. Thanks in advance of any help you may be able to offer. W. [Posted in FML issue 4017]