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U.S. Department of Health and Human Services


Guide for Primary Health Care Providers: Targeted Tuberculin Testing and Treatment of Latent Tuberculosis Infection

Changes in Terminology

Latent TB infection (LTBI) is a condition in which TB bacteria are present, but contained. Individuals with LTBI have no symptoms and cannot spread the disease to others. They may develop TB disease later in life if they do not receive treatment.

Treatment of LTBI is treatment with medication that prevents the development of TB disease.

Old terminology Preventive therapy or chemoprophylaxsis

Targeted tuberculin testing focuses on testing groups of people who are at high risk for TB infection and identifying those who would benefit from treatment.

Old terminology TB screening


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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