A Child May Be Given the Vaccine for Chickenpox

question 10

Multiple Choice

A child may be given the vaccine for chickenpox. If the child goes to school and plays with other children who have the chickenpox virus, the vaccinated child will not get sick. Why is this?

• A) Vaccines act like antibiotics so that any organism in the body will be destroyed before the immune system has to respond.
• B) Vaccines introduce a friendly virus into cells so they cannot be infected with a second virus.
• C) Vaccines produce a primary response in which memory cells are generated that respond rapidly in a second exposure.
• D) Vaccines stimulate macrophages to work extra hard to fight infections.

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