Explain why a person who recovers from a disease can attend others with the disease without fear of contracting it.

Video transcript

Hi, everyone. Let's take a look at this question together. Immunity from a specific disease is afforded to a person by which of the following is it? Answer choice. A vaccinations, answer choice B antibodies produced after an infection. Answer choice C memory B cells or answer choice D all of the above. Let's work this problem out together to try to figure out which of the following answer. Choices explains how immunity from a specific disease is afforded to a person. So in order to solve this question, we have to recall what we have learned about immunity and how immunity from a specific disease would be afforded to a person. And we know that as per the World Health Organization immunization is the procedure by which an individual is made resistant or immune to a disease by administering a vaccine. And we also know that a vaccine stimulates the body's immunity to keep a person protected against subsequent infections or diseases. And we also know that after infection, the cells that produce antibodies multiply and increase proportionally and the memory B and T cells persist for many years. So immunity from a specific disease is afforded to a person through vaccinations, as well as those antibodies produced after an infection and the memory b cells, which makes answer choices. A B and C. All correct answers. Therefore, answer choice. D all of the above is the most appropriate answer choice and all other answer choices individually are incorrect. I hope you found this video to be helpful. Thank you and goodbye.