Abstract
Objective: The initial infection of tuberculosis is usually confidential and limited by body defense mechanisms. If there is weakening of the body resistance, this infection may become active. Latent infection can not be recognized as radiological and bacteriologically. Early detection of infection is necessary before immunosuppressive therapies are used in many diseases today. It is also important to demonstrated to transmission of tuberculosis from family members and presence of infections in small children. Methods: A total of 76 people were included in the study between 20.02.2016-15.03.2017 with patients with tuberculosis suspicion at Duzce University Faculty of Medicine Hospital's intensive care unit and outpatient clinics, health personel and tuberculosis dispensary personel. Gamma interferon release assay "Quantiferon-Tb Gold ELISA test (QIAGEN, Germany)" was used to demonstrate latent infection. Results: A total of 19 (25%) subjects had a positive test. Of the 19 patients who were positive, 8 (42%) had a pulmonary tuberculosis pre-diagnosis, 4 (21%) of them had an extrapulmonary tuberculosis pre-diagnosis and 7 (37%) had contact with tuberculosis patients. Two of the patients (10.5%) were positive for lung tuberculosis, one (5.2%) were tuberculous lymphadenitis and one (5.2%) were tuberculous meningitis. All health personel who were taken to the TB dispensary were found to be positive. Finally, only one of the 19 patients have been working at microbiology laboratory of our hospital who determinate positive test results, and he had a family story of tuberculosis. Conclusion: The Quantiferon Tb gold ELISA test was thought to be a method that could be applied to all healthcare workers, especially healthcare workers who are constantly in contact with patients with tuberculosis. It is also considered appropriate to use of the patient with suspected active tuberculosis infection until culture end.
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