Four employees at a local restaurant have positive purified protein derivative (PPD) tuberculin skin tests and have been diagnosed with latent tuberculosis (TB) infection. Which employee would be at the greatest risk for contracting active TB disease?
A) Works two jobs
B) Vacations in South America
C) Cooks the food
D) Takes immunosuppressants
Ans: D
Feedback:
In many people who have latent TB infection, the Mycobacterium tuberculosis bacteria remain inactive for a lifetime without causing active TB disease. But in other people, especially those who have weak immune systems, the bacteria become active and cause TB disease. Working two jobs, vacationing in South America, and cooking food would not put one with a latent TB infection at greater risk for contracting active TB disease.
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