Question

♔Define Vaccine♔ ????​

Answer 1

Explanation:

A vaccine is a biological substance designed to protect humans from infections caused by bacteria and viruses. Vaccines are also called immunizations because they take advantage of our natural immune system's ability to prevent infectious illness.

Answer 2

Answer:

a mild form of a disease that is put (injected) into a person or an animal’s blood using a needle (an injection) in order to protect the body against that disease

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