The investigators aim to study the prevalence of latent tuberculosis infection (LTBI) using whole-blood interferon-r release assays, and determine the risk factors of LTBI in Korean health care workers.
Further study details as provided by Hanyang University Hospital
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
SCREENING
Masking
NONE
Enrollment
240
In all enrolled health care workers, QFT-IT Test and other blood sampling were performed.
Hanyang University Hospital
Seoul, South Korea
RECRUITINGPercentage of latent tuberculosis infection developed in Korean health care workers
The participants performed QuaniFERON-TB Gold In-Tube test (QFT-IT test) and blood sampling at enrollment. So, the length of time which from the start of the first test of very first participants to the end of test of very last participant is 3 months. The percentage of participants with LTBI in health care workers was evaluated.
Time frame: Three months
Annual incidence of latent tuberculosis infection in Korean health care workers
QFT-IT test was performed at enrollment and repeated at point of one year after enrollment. So, the length of time which from the start of the first test of very first participants to the end of the second test of very last participant is 12 to 15 months. The percentage of participants with positive conversion in follow-up QFT-IT test (second test) was evaluated in participants who had negative results in the first QFT-IT test. Annual infection of LTBI was evaluated with the conversion of QFT-IT test through annual check up of QFT-IT test.
Time frame: 1 year after first QFT-IT test (12-15 months)
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