Arulkumar, TTANUVAS2020-10-062020-10-062020-02https://krishikosh.egranth.ac.in/handle/1/5810152627TNV_TM_17-26-Feb-2020_224-228Vaccine is a biological preparation that provides active acquired immunity to a particular disease typically contains an agent that resembles a disease-causing microorganism and is often made from weakened or killed forms of the microbe, its toxins, or one of its surface proteins stimulates the body’s immune system. It is estimated that veterinary vaccines are available for over 400 diseases affecting mammals, birds and fish, including farm animals, pets and wildlife.EnglishVeterinary ScienceVeterinary Clinical ComplexArticle