What is vaccination? Why is it necessary for us.
Answers
Answered by
1
Answer:
it is necessary to us
Explanation:
it is a injection that give to the people to prevent don't suffer from any harmful diseases
Answered by
8
Answer:
Vaccination is the administration of a vaccine to help the immune system develop protection from a disease. Vaccines contain a microorganism or virus in a weakened or killed state, or proteins or toxins from the organism.
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