livestock vaccines, vaccine types
Veterinary and Biomedical Sciences
Vaccines are suspensions of microorganisms administered with the goal of stimulating the body’s immune system against these same organisms, thereby preventing a clinical disease or reducing its sever¬ity. The agents included in vaccines are inactivated or modified such that, once introduced into the body, they do not cause clinical illness.
Daly, Russ and Price, Ann, "Livestock Vaccines: How They Work and How to Ensure They Do Their Job" (2010). SDSU Extension Extra Archives. 400.