Question

What are vaccine? How do they work

Answer 1

Answer:

A vaccine works by training the immune system to recognize and combat pathogens, either viruses or bacteria. To do this, certain molecules from the pathogen must be introduced into the body to trigger an immune response.

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Answer 2

Explanation:

➡️Vaccines are suspensions of killed, or weakend microorganisms (or products,or derivatives, of such microorganisms).

➡️ The most common method of administering vaccines is by inoculation; however,some Vaccines are given orally also .

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