Vaccines help prevent many illnesses that affect pets. Vaccinating your pet has long been considered one of the easiest ways to help him live a long, healthy life. Not only are there different vaccines for different diseases, there are different types and combinations of vaccines. Vaccination is a procedure that has risks and benefits that must be weighed for every pet relative to his lifestyle and health.
Vaccines help prepare the body's immune system to fight the invasion of disease-causing organisms. Vaccines contain antigens, which look like the disease-causing organism to the immune system but don't actually cause disease. When the vaccine is introduced to the body, the immune system is mildly stimulated.