In the Tuberculin Skin Test, What Would Be the Most

question 33

Multiple Choice

In the tuberculin skin test, what would be the most likely reason why a positive test would NOT necessarily indicate an infection in progress in a patient who was born and grew up in the United States?

• A) False-positives occur all the time. This might simply be an example of that.
• B) The TB skin test is a measure of reactivation of memory T cells. The memory T cells would be formed during an active infection and would remain after the infection cleared. This would result in the test still showing positive, even though the patient is cleared of actual infection.
• C) Each person in the United States receives the BCG tuberculosis vaccine. This is an attenuated mycobacterium vaccine. The response to this vaccine makes us positive for the TB skin test, even though we may not have actually had a TB infection at any point in our lives.
• D) A positive TB skin test ALWAYS indicates a current, active infection.

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Definitions:

Complex Adaptive

Systems that are able to adapt and evolve in response to changes in the environment.

Contingency Approaches

Management theories suggesting that the best way to handle any situation depends on the specifics of the environment and circumstances.

Normative Theories

Theories that provide guidelines or frameworks for understanding how media should operate in society based on ethical values and principles.

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A leadership style where the leader takes a hands-off approach, allowing team members to make decisions and solve problems on their own.