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Vaccine


 

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 vaccinia, the infectious viral agent of cowpox, which, when administered to humans, provided them protection against smallpox. The process of distributing and administrating vaccines is referred to as vaccination.

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~ Table of Content ~

Introduction
Origin of vaccines
Types of vaccines
Developing immunity
Controversy surrounding the use of vaccines
Economics of vaccine development
See also
References
External links

 

 

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