A dead version of a virus is introduced into a person. This activates the person's immune system, which learns how to fight the

virus. Years later, the person comes in contact with the virus again and does not get sick because his immune system can easily

defeat the virus. What has most likely occurred in this scenario so that the person did not get sick during the second exposure?

•The person developed a vaccine against the virus.

•The person was sick from a virus and developed innate immunity.

•The person was vaccinated against the virus.

•The person was sick from a virus and developed an immune response.

Question

Bailey Terry

Biology

18 June, 16:50

A dead version of a virus is introduced into a person. This activates the person's immune system, which learns how to fight the

virus. Years later, the person comes in contact with the virus again and does not get sick because his immune system can easily

defeat the virus. What has most likely occurred in this scenario so that the person did not get sick during the second exposure?

•The person developed a vaccine against the virus.

•The person was sick from a virus and developed innate immunity.

•The person was vaccinated against the virus.

•The person was sick from a virus and developed an immune response.

+2

Answers (2)

Know the Answer?

Alan Le · Answer 1

The person was vaccinated against the virus

Ashlynn · Answer 2

C

Explanation:

With vaccinations, a dead version of a virus is injected into the immune system. The immune system basically learns how to fight the virus so that when the person comes in contact with the actually alive virus, the immune system can easily defeat it.