(Merck) Nobivac Feline 1-HCP vaccine is a modified live virus vaccine for protection against feline rhinotracheitis (feline herpes), calici and panleukopenia (feline distemper) viruses. Give 1 ml SQ or IM to cats 9 weeks of age or older. Repeat with a second dose 3 to 4 weeks later. Annual revaccination with one dose is recommended. Not for pregnant queens. Nobivac Feline 1-HCP requires mixing. Order syringes separately.