Immunogenic and protective effects of the F-2 strain of feline viral rhinotracheitis virus.

The F-2 strain of feline viral rhinotracheitis (FVE) virus was administered by intramuscular (IM) injection to susceptible cats. The cats developed serum-neutralizing antibodies and were protected to a significant degree when given, by intranasal (IN) instillation challenge inoculum of a virulent strain of FVR virus.