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CompletedNCT00981071Updated Apr 8, 2010

The Time of Positive Conversion of Interferon-γ Releasing Assay After Tuberculosis Exposure

An observational study in Tuberculosis, sponsored by Armed Forces Capital Hospital, Republic of Korea. Completed. Open to male participants, including healthy volunteers. Per ClinicalTrials.gov, last updated 2010-04-08.

Sponsored by Armed Forces Capital Hospital, Republic of Korea · Observational

Study type
Observational
Model
Cohort
Time perspective
Prospective
Enrollment
32
Sex
Male
01

Study summary

The aim is to evaluate the time of positive conversion after exposure to smear positive pulmonary tuberculosis (TB) in a platoon of Korean military, a closed communal setting.

Read the detailed description

In a platoon where TB outbreak occurred, we performed low dose chest CT (LDCT), QuantiFERON-TB gold in tube (QFT) and two-step (0, 4weeks) TST for outbreak investigation. We perform QFT at 0, 2, 4, 8 and 12 weeks after initial investigation for soldiers with negative QFT results, and soldiers with positive QFT and normal LDCT took isoniazid and rifampin for 3 months as treatment of latent TB.

02

Conditions studied

  • Tuberculosis

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Keywords

  • Tuberculosis
  • QuantiFERON
  • Outbreak
  • Conversion
03

In context

Tuberculosis

1,435 studies on the registry are indexed under Tuberculosis; 208 are open to participants now.

This study's enrollment of 32 is below the median of 240 across 427 observational studies indexed under Tuberculosis.

Browse Tuberculosis studies →

Lead sponsor

Armed Forces Capital Hospital, Republic of Korea is the lead sponsor of 6 studies on the registry; none are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
Child (0–17), Adult (18–64), Older adult (65+)
Sexes eligible
Male
Accepts healthy volunteers
Yes
Sampling method
Non-probability sample

Study population

A military unit in South Korean Army

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • All soldiers who assigned to the military platoon where a tuberculosis outbreak occurred

Exclusion criteria

Exclusion Criteria:

  • Soldiers who could not complete study or refused the study protocol
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Study design

Observational model
Cohort
Time perspective
Prospective
Enrollment
32 participants (actual)

Groups and cohorts

  • A platoon with TB outbreak
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Study locations

No study locations are listed for this record.

07

Timeline

Tracking since Sep 25, 2026
Not marked actual or estimatedDates not marked actual or estimated

The record gives a start of May 2009, a primary completion of Apr 2010 and a completion of Apr 2010. It does not say whether these dates are actual or estimated.

How these figures are worked out, and which studies are left out of them.

Registered
Sep 21, 2009
First posted
Sep 22, 2009
Start
May 2009
Primary completionActual
Apr 2010
CompletionActual
Apr 2010
Last update
Apr 8, 2010
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Apr 8, 2010, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
08

Registry details

Key details

Study ID
NCT00981071
Lead sponsor
Armed Forces Capital Hospital, Republic of Korea
First posted
Sep 22, 2009
Start date
May 2009
Primary completion
Apr 2010
Completion
Apr 2010
Last update
Apr 8, 2010

Study contacts

Jae-Joon Yim, MD
principal investigator · Seoul National University Hospital

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Apr 2010. You cannot join it, but the record below documents what was studied.

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Discussion

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Armed Forces Capital Hospital, Republic of Korea

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