what are the principles of immunization?
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Vaccination is the administration of antigenic material (a vaccine) to stimulate an individual's immune system to develop adaptive immunity to a pathogen. Vaccines can prevent or ameliorate infectious disease. When a sufficiently large percentage of a population has been vaccinated, herd immunity results.
ajmal64:
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but what about the principles.........
i will add
sorry i forgot that
it's okay my friend!
can u please solve my problem
where is the que
i do not understand that! what could be the meaning?
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I hope this will help you
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