what is vaccine and vaccination
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Vaccination is a treatment which makes the body stronger against a particular infection.
Vaccine refers to microorganisms or virus in the weakend state
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if dead or weakend microbes are introduced into a healthy body, the body fights and kills the invading bacteria by producing suitable antibiotic. the antibiotics remain in the body and we were protected from the disease causing microbes forever. this is how vaccine work
serveral diseases including chlorella smallpox can be prevented by vaccination
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