Vaccines And The Immune System

1938 Words8 Pages
Vaccines are used to train the immune system to fight of the natural forms of diseases or toxins. Today, there are seven different types of commonly used vaccines. These vaccines are live, inactivated, subunit, toxoid, conjugate, DNA, or recombinant vector vaccines. Each type of vaccine is used for different diseases and different purposes. They each have specific makeups and properties that make them different from one another. Live vaccines contain a version of the living microbe that has been altered and weakened by scientists to keep the microbe from causing the disease after vaccination. Inactivated vaccines are produced when scientists take a live microbe that causes a disease and kill it, usually through either radiation, heat, or chemicals. After being killed, the microbes are unable to mutate and cause the disease. Many of our popular vaccines today, such as the flu shot, rabies vaccine, and polio vaccine. Subunit vaccines only include “the antigens that best stimulate the immune system” (Types). Toxoid vaccines are used for bacteria that release harmful toxins or chemicals. Scientists will “detoxify” toxins and cause them to be inactive and harmless to the body. Conjugate vaccines are typically used on infants and young children. Conjugate vaccines have polysaccharide coatings that disguise the antigens which allow the child’s immature immune system to recognize the antigens and find a way to defend against them. DNA vaccines are thought of by many as the future of
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