Spectra® 5 vaccine is a combination of immunogenic, attenuated strains of Canine Distemper, Canine Adenovirus Type 2 (CAV-2), Canine Parainfluenza, and Canine Parvovirus Type 2b, propagated in cell line tissue cultures. The CAV-2 fraction cross-protects against respiratory infection caused by infectious canine hepatitis (CAV-1). Ideal first shot for puppies.