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U.S. Department of Health and Human Services


Core Curriculum on Tuberculosis, 2000

Chapter 4
Testing for TB Disease and Infection

Study Questions

Answers to these questions can be found in the text.

  1. What is the purpose of testing for TB infection and disease?
  2. Name eight groups who are at higher risk for exposure to or infection with M. tuberculosis.
  3. Name six groups who are at higher risk of developing TB disease once infected with M. tuberculosis.
  4. How is the Mantoux tuberculin skin test given? How is it read?
  5. What are the cutoffs (in millimeters of induration) for different groups?
  6. What can cause a false-positive reaction? What can cause a false-negative reaction?
  7. What is anergy?
  8. When and why should two-step testing be done?


Released October 2008
Centers for Disease Control and Prevention
National Center for HIV/AIDS, Viral Hepatitis, STD, and TB Prevention
Division of Tuberculosis Elimination -

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