Tuberculosis and Other Mycobacterial Infections

  • Authors: Richard E. Chaisson, MD (More Info)
  • Editors in Chief: Daniel R. Kuritzkes, MD; Joseph J. Eron, Jr., MD
  • Last Reviewed: 3/30/17 (What's New)

Summary

  • MDR-TB is defined as TB that is resistant to at least isoniazid and rifampin
  • RR-TB is defined as TB that is resistant to rifampin, usually based on molecular testing using the Xpert MTB/RIF test, regardless of whether resistance results for other drugs are available or not
    • RR-TB is considered a surrogate for MDR-TB

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