This case study is a tool for instructors who are training clinicians about tuberculosis (TB) disease and latent tuberculosis infection (LTBI). The case study is designed to be one component of an instructor's larger training curriculum. The instructor can use the case study to challenge learners to apply course concepts to a "real life" situation. This case study focuses on the proper procedures for diagnosing and treating persons with LTBI so that new cases of active TB can be prevented. Key issues include the identification of persons at increased risk for the development of tuberculosis once infected with M. tuberculosis; administration of tuberculin skin tests (TST) and interpretation of the results; ruling out active TB; treatment options for LTBI; and monitoring patients being treated for LTBI. The "Instructor Files" contain: * Annotated Instructor's Version of the case study * PowerPoint slides** * Masters for overhead transparencies * Instructor's evaluation form The "Participant Files" contain: * 1 reproducible master copy of Participant's Version of the case study * 1 reproducible master copy of the Participant's Answer Key Please see the Instructor's Version for complete instructions about how to use the case study. **The PowerPoint slides are best viewed by saving the file to your computer and reopening using MS PowerPoint. To do this, right click on the file with your mouse and download to your local drive.

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