In recent years, companion animals have become popular and more important in our daily lives. Due to companion animal business opportunities, there is also a high demand for companion animal vaccines, especially for dogs. Companion animals also need vaccines to prevent diseases as well as zoonoses.

Canine vaccines are mainly divided into two types, core vaccines and non-core vaccines. Core vaccines prevent highly contagious and highly fatal diseases, such as rabies (rabies virus), canine distemper (canine distemper virus), canine parvovirus disease (canine parvovirus type 2), canine infectious tracheobronchitis (canine adenovirus type 2), and canine infectious hepatitis (canine adenovirus type 1). Non-core vaccines are for preventing non-core diseases; for example, canine parainfluenza (canine parainfluenza virus), canine leptospirosis (Leptospira bacteria), leptospirosis icterohaemorrhagica (Leptospira bacteria), canine coronavirus enteritis (canine coronavirus), Lyme disease (Borrelia burgdorferi), etc. There are also multivalent vaccines to completely achieve immune protection.