what is vaccination
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❤️Vaccination is the administration of antigenic material to stimulate an individual's immune system to develop adaptive immunity to a pathogen. ❤️
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◆Vaccination is the administration of antigenic material 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◆
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