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  • Title: A simple screening tool for active tuberculosis in HIV-infected adults receiving antiretroviral treatment in Uganda.
    Author: Were W, Moore D, Ekwaru P, Mwima G, Bunnell R, Kaharuza F, Rutherford G, Mermin J.
    Journal: Int J Tuberc Lung Dis; 2009 Jan; 13(1):47-53. PubMed ID: 19105878.
    Abstract:
    SETTING: Reliable clinical algorithms that screen for active tuberculosis (TB) in human immunodeficiency virus (HIV) infected people initiating or receiving antiretroviral treatment (ART) in sub-Saharan Africa could reduce the need for diagnostic procedures. METHODS: We estimated the utility of six TB-related signs and symptoms, alone or in combination, compared with the Uganda Ministry of Health diagnostic guidelines for participants with prevalent (baseline), early ART (< or = 3 months on ART) and incident TB (>3 months on ART). RESULTS: Of 1995 participants screened for ART eligibility, 71 (3.6%) had prevalent TB. The presence of any one of the following: cough > or = 3 weeks, fever > or = 4 weeks, lymphadenopathy or baseline body mass index < or = 18 kg/m(2) had a sensitivity of 99% (95%CI 96-100), a specificity of 66% (95%CI 64-68) and a negative predictive value (NPV) of 100% (95%CI 99-100) for predicting active TB. During ART follow-up, TB incidence was 2.4 (95%CI 1.6-3.4)/100 person-years. The presence of cough > or = 3 weeks or general weakness was 100% sensitive (95%CI 99-100), 66% specific (95%CI 59-74) and had an NPV of 100% (95%CI 99-100). CONCLUSION: Use of a simple TB screening algorithm can accurately identify, in a resource-poor African setting, HIV-infected individuals who require further procedures to diagnose active TB.
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