Potency of an Attenuated Canine Distemper Vaccine Derived from Chick Embryo Cell Cultures

Symposium on use of Heterotypic Canine Distemper Vaccine: 3 Assessment of Protection Against Distemper Under Laboratory Conditions*

“…Dog kidney-adapted strains of virus, for example, seem less able to protect ferrets than the egg-adapted counterparts (Rockborn et id., 1965). O n the other hand, some of the latter (Prydie, 1968b) are not sufficiently attenuated for ferrets. Curiously, measles vaccines do not protect ferrets at all (Cabasso et al, 1960;Ott, 1966).…”