Unless things have changed significantly, only IMRAB-3 is USDA approved for
use in ferrets to vaccinate against rabies. Use of any non-approved rabies
vaccine may protect the ferret against the disease, but not the authorities
where rabies vaccinations are required.
One other caution. Even though I believe that practically all rabies
vaccines are now killed virus. There MAY be a live-virus vaccine out
there. Use of a live virus rabies vaccine risks giving the ferret rabies.
Dick B.
[Posted in FML issue 2362]