Question

Which of the following best defines a vaccine?

a)     A disease that is injected into a body to protect it from another disease.

b)     A chemical used to prevent diseases and other sicknesses from spreading.

c)     A shot or immunization containing a weakened or dead bacteria or virus to protect against disease.

d)     A germ used to help people of all ages throughout the world as protection against sickness.

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Answer 1

Answer:

Option B is the answer.

• A chemical used to prevent diseases and other sicknesses from spreading.