Vaccines : The Causative Agent Of A Disease Essay

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A Vaccine is defined as, “A substance used to stimulate the production of antibodies and provide immunity against one or several diseases, prepared from the causative agent of a disease. Its products treated to act as an antigen without inducing the disease.” Vaccines have been around for hundreds of years. It is believed that the first unofficial vaccine was created in 1661 by a Chinese Emperor. Throughout the years, vaccines have become more advanced. For example, in 1955, public vaccination for Polio began and Jonas Salk and Albert Sabin found two different vaccines to fight this disease. Vaccines are very important in the world, yet many people have little knowledge about them. In today’s society, we have many different vaccines that hold great importance, though there many pros, there are still some cons still not worked out.
Ever since vaccines were created, many diseases have been cured, and millions of lives have been saved. Some of the major diseases that vaccines work to prevent are; Smallpox, Diphtheria, Whooping cough, Measles, Neonatal tetanus, Hepatitis B, Tuberculosis, and Polio (Vaccines Bring 7 Diseases Under Control, 2016). These immunizations have been able to save about 9 million lives a year worldwide. The only disease that has been fully eradicated by vaccines so far is Smallpox. Just because Smallpox is the only disease that is gone completely, does not mean that other disease will not soon follow. It is predicted that Polio could be the next disease

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