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עמוד בית
Thu, 21.11.24

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February 2012
D. Bendayan, A. Hendler, K. Litman and V. Polansky
Background: Interferon-gamma release tests are appealing alternatives to the tuberculin skin test (TST) for latent tuberculosis infection.

Objectives: To determine the yield of the Quantiferon TB Gold test (QFT-G) in the diagnosis of active tuberculosis disease, with a focus on elderly patients, human immunodeficiency virus (HIV) co-infection, and extra-pulmonary tuberculosis (EPTB).

Methods: The QFT-G test was performed in 98 patients suspected of having active tuberculosis. The results were evaluated for each subgroup of patients and compared to the results of the TST.

Results: Active tuberculosis was diagnosed in 92 of the 98 patients. Sixteen (17.3%) were elderly patients (over age 70), 15 (16%) were co-infected with HIV, and 14 (15%) had EPTB. QFT-G was positive in 49 patients (53%) and indeterminate in 4. The results were not significantly affected by HIV co-infection (P = 0.17), old age (P = 0.4), or the presence of EPTB (P = 0.4). There was a good correlation between the TST and the QFT-G test (P < 0.001). In EPTB and in the elderly, the QFT-G test appears to be better than the TST.

Conclusions: The QFT-G test is suboptimal in its ability to detect active tuberculosis and should not be used to exclude it.
February 2010
D. Bendayan, K. Littman and V. Polansky

Background: Tuberculosis is the most common opportunistic infection among people infected with human immunodeficiency virus and its first cause of morbidity and mortality.

Objectives: To analyze the characteristics of a population in Israel with both tuberculosis disease and HIV[1] infection in order to identify factors that contribute to outcome.

Methods: The study group comprised patients hospitalized in the Pulmonary and Tuberculosis Department of Shmuel Harofeh Hospital during the period January 2000 to December 2006. They were located by a computer search in the hospital registry and the pertinent data were collected.

Results: During the study period 1059 cases of active tuberculosis disease were hospitalized; 93 of them were co-infected with HIV. Most of them came from endemic countries (61.2% from Ethiopia and 20.4% from the former Soviet Union; none of them was born in Israel). Ten percent of the cases were multiple-drug resistant and 32% showed extrapulmonary involvement. The response rate to the treatment was good, and the median hospitalization time was 70 days. The mortality rate was 3.2%.

Conclusions: Despite the high prevalence of pulmonary disease in our group, the short-term outcome was good and the Mycobacterium was highly sensitive to first-line drugs. These encouraging results can be attributed to the fact that tuberculosis patients in Israel are identified early and treated continuously and strictly, with early initiation of antiretroviral therapy, which ensures that the development of drug resistance is low.






[1] HIV = human immunodeficiency virus


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