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
No Contacts or Locations Provided
  More Information

No publications provided

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, Welfare and Family Affairs

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

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

ClinicalTrials.gov processed this record on April 17, 2014