Diagnosis of Latent Tuberculosis(TB) Infection in Health Care Workers Using TST and Whole Blood Interferon-γ Assay

This study has been completed.
Information provided by:
Yonsei University
ClinicalTrials.gov Identifier:
First received: August 19, 2009
Last updated: NA
Last verified: August 2009
History: No changes posted
The investigators think that the health care workers who contact frequently with active tuberculosis patients have more increased prevalence of LTBI compared with those who don't.


Study Type: Observational
Study Design: Time Perspective: Prospective

Resource links provided by NLM:

Further study details as provided by Yonsei University:


Ages Eligible for Study:   20 Years and older
Genders Eligible for Study:   Both
Sampling Method:   Probability Sample
Study Population
latent tuberculosis prevalence of health care workers

Inclusion Criteria:

  • health care workers

Exclusion Criteria:

  • active pulmonary tuberculosis
  • previous Tuberculosis history
  • below 20 years old
  • history of hypersensitivity about PPD
  • pregnant
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

No Contacts or Locations Provided
  More Information

ClinicalTrials.gov Identifier: NCT00962793     History of Changes
Other Study ID Numbers: 4-2009-0187 
Study First Received: August 19, 2009
Last Updated: August 19, 2009
Health Authority: Korea: Food and Drug Administration
Korea: Ministry for Health and Welfare

Keywords provided by Yonsei University:
latent tuberculosis prevalence of health care workers

Additional relevant MeSH terms:
Latent Tuberculosis
Actinomycetales Infections
Bacterial Infections
Gram-Positive Bacterial Infections
Mycobacterium Infections

ClinicalTrials.gov processed this record on May 26, 2016