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Chapter 17: Problem 12

Cite three reasons why developing a vaccine against HIV infection has been challenging.

Short Answer

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The development of a vaccine against HIV is challenging due to HIV's rapid mutation, its destruction of the body's T-cells weakening immune response, and the lack of natural immunity in HIV-infected individuals making it difficult to identify useful markers for vaccine development. Ethical implications around clinical trials also add to the challenge.

Step by step solution

01

Understanding HIV's unique characteristics

The first challenge that makes HIV hard to combat with a vaccine is its unique characteristics. HIV is highly mutable, which means it can change its form very quickly and these modifications can make it difficult for a vaccine to recognize and target the virus.
02

The Effect of HIV on the immune system

The second challenge is the fact that HIV targets and destroys the body's T-cells, which are a critical part of the immune system. This means that the virus weakens the ability of the body's immune system to respond effectively, making it more difficult for a vaccine to stimulate a strong immune response.
03

Difficulties in vaccine development

The third challenge is the lack of natural immunity observed in HIV-infected individuals, which complicates the identification of useful markers for vaccine development. Also, conducting clinical trials for HIV vaccines is also a challenge due to the ethical implications of testing potential vaccines on human subjects.

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Most popular questions from this chapter

Distinguish between viruses and bacteria.

Distinguish between a. a \(T\) cell and a \(B\) cell. b. innate and adaptive immunity. c. a primary and secondary immune response. d. a cellular and humoral immune response. e. an autoimmune condition and an allergy. f. an inherited and acquired immune deficiency.

Cite two explanations for why autoimmune disorders are more common in females.

Explain how a "reverse" vaccine is similar to but also different from a traditional vaccine

What would be the consequences of lacking a. helper T cells? b. cytotoxic T cells? c. \(\mathrm{B}\) cells? d. macrophages?
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