Conversion Rate of (TST) Tuberculin Skin Test and Quantiferon-TB Gold In Tube Assay in Health Care Workers

Conversion Rate of TST and Quantiferon-TB Gold In Tube Assay in Health Care Workers

The purpose of this study is to access conversion rate of TST (Tuberculin skin test) and Quantiferon-TB Gold In tube assay in health care workers.

Inclusion Criteria:

• age 20-75, men and women
• participant who was enrolled in the study of latent tuberculosis in health care worker (IRB No.4-2009-0187)
• high risk or low risk health care worker who was performed TST or Quantiferon-TB Gold In tube assay before

Exclusion Criteria:

• age < 20
• person who don't agree with enrollment
• illiterate
• person who is diagnosed as active tuberculosis now
• person who has history of hypersensitivity on PPD (tuberculin purified protein derivative)
• pregnant woman
• person who is treated as active tuberculosis