Dogs are very susceptible to certain infectious diseases, especially canine distemper, infectious canine hepatitis, parvovirus, parainfluenza, leptospirosis, and rabies. Combined vaccination (all in one) against all these diseases as well as kennel cough, corona viral gastro-enteritis etc has proved to be a very effective means of reducing the incidence of these diseases. The initial vaccination series consists of one injection of a combined vaccine (multivalent) given at 6 to 8 weeks of age or about 2 weeks after weaning. Boosters are given twice at 3-4-week intervals until 16-20 weeks of age. Thereafter they require annual vaccinations. In most states, the first shot of rabies vaccine is given at 3 months of age. These booster injections not only help maintain his immunity, but they also provide a good opportunity for your veterinarian to carry out a full health check.
Question by - Nanda Anil