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Journal of Clinical Research

Open Access

Vaccination

Vaccine is a biological preparation that improves immunity to a particular disease and develops adaptive immunity to a pathogen. Vaccination is most effective method of preventing infectious disease. A vaccine typically contains an agent that resembles a disease-causing microorganism, and is often made from weakened or killed forms of the microbe, its toxins or one of its surface proteins. The agent stimulates the body's immune system to recognize the agent as foreign, destroy it, and "remember" it, so that the immune system can more easily recognize and destroy any of these microorganisms that it later encounters.

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