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A vaccine is an antigenic preparation used to produce active immunity to a disease, in order to prevent or ameliorate the effects of infection by any natural or "wild" strain of the organism. The term derives from Edward Jenner's use of cowpox ("vacca" means cow in Latin), which, when administered to humans, provided them protection against smallpox, which Pasteur and others perpetuated. The process of distributing and administrating vaccines is referred to as vaccination.

Vaccines against cancer are also being investigated; see cancer vaccine. In this case, the antigenic preparation is derived from the cancer cell. There is also research on an HIV vaccine.

Origin of vaccines


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Measles vaccine for all: A measles outbreak has sparked calls for all children to be immunised against the virus. http://bit.ly/3OuyJH
iafrica_news (Ryan Bubear) Sun, 11 Oct 2009 13:03:55 -0000
Measles vaccine for all: A measles outbreak has sparked calls for all children to be immunised against the virus. http://bit.ly/3OuyJH

 
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Measles Virus Vaccine - Familydoctor.org - Information for patients in English and Spanish.

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