Also known as: Vaccinations, Vaccines

In many cases when you get a vaccine, you get a tiny amount of a weakened or dead form of the organism that causes the disease. Though not enough to give you the actual disease, it is enough to cause your immune system to make antibodies. 

Immunizations help protect you or your child from disease. They also help reduce the spread of disease to others and prevent epidemics. Most are given as shots. They are sometimes called vaccines, or vaccinations.