Background: Tuberculin skin test (TST)—is widely used for screening tuberculosis TB in migrants from high endemic countries of Africa and Asia. However, the cut-off point for clinical TB and Mtb infection is not well...Background: Tuberculin skin test (TST)—is widely used for screening tuberculosis TB in migrants from high endemic countries of Africa and Asia. However, the cut-off point for clinical TB and Mtb infection is not well established in TB endemic countries of sub-Saharan Africa. In this study we compared the size of TST induration in smear positive pulmonary TB (PTB) patients, their house-hold contacts and community controls in high endemic setting in Ethiopia. Methods: In a health facility-based cross-sectional study, smear positive PTB patients were recruited. Their household contacts traced, and community controls were recruited from neighbourhoods. Sputum sample collected from patients were examined using smear microscopy. Participants were also tested by TST and QuantiFERON? -TB Gold In–Tube test (QFTGIT). Results: From a total of 224 study participants, skin test induration data were available for 48 PTB patients, 88 household contacts and 75 community controls. All 48 patients, 64 (72.2%) of the household contacts and 35 (46.7%) of the community controls had skin test induration ≥ 10 mm. Moreover, 44 (91.7%) PTB patients, 58 (65.9%) of the household contacts and 26 (34.7%) of the community controls had skin test induration ≥ 15 mm, respectively. The mean size of TST induration was significantly higher in TB patients (18.1mm) compared to that of household contacts (13.6 mm) and community controls (7.9 mm) (pMtb展开更多
</span><b><span style="font-family:Verdana;">Purpose</span></b></span></span><span style="font-family:Verdana;"><span style="font-family:Verd...</span><b><span style="font-family:Verdana;">Purpose</span></b></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><b><span style="font-family:Verdana;">:</span></b></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"></b></span></span></span><span><span><span style="font-family:""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">The purpose of this article is </span></span></span><span><span><span style="font-family:""><span style="font-family:Verdana;">to investigate the clinical value of TB-IGRA</span><span style="font-family:Verdana;"> (Tuberculosis-Interferon </span><span style="font-family:Verdana;">Gamma Release Assay), PPD (Intradermal </span><span style="font-family:Verdana;">Terbuculin Test), TB-DNA-PCR (Tuberculosis-Deoxyribonucleic-Polymerase</span><span style="font-family:Verdana;"> Chain Reaction) and TB-Ab (Tuberculosis-Antibody) in diagnosing silicosis complicated with pulmonary tuberculosis. <b></span></span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><b><span style="font-family:Verdana;">Methods</span></b></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><b><span style="font-family:Verdana;">:</span></b></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"></b></span></span></span><span><span><b><span style="font-family:""> </span></b></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">53 cases of suspected silicosis complicated with pulmonary tuberculosis were selected in the time span ranging from February 2017 to May 2019. TB-IGRA test, PPD test, TB-DNA-PCR and TB-Ab detection were performed. The sensitivity, specificity, positive predictive value and negative predictive value were calculated. </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><b></span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><b><span style="font-family:Verdana;">Results</span></b></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><b><span style="font-family:Verdana;">:</span></b></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"></b></span></span></span><span><span><span style="font-family:""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">Silicosis and pulmonary tuberculosis were diagnosed in 11 cases, with an incidence of 20.75%. The positive rates of TB-IGRA, PPD, TB-DNA-PCR and TB-Ab were 66.04%, 30.19%, 5.67% and 26.42%, respectively. The sensitivity was 90.91%, 81.82%, 27.27% and 54.55% respectively. The specificity was 42.86%, 80.95%, 100% and 80.95% respectively. The positive predictive values were 28.57%, 50%, 100% and 42.86% respectively. The negative predictive values were 94.44%, 91.89%, 84% and 87.18%. The positive rate, sensitivity and negative predictive value of TB-IGRA were the highest, while the specificity of TB-DNA-PCR was the highest yet with low positive rate, sensitivity and positive predictive value. </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><b></span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><b><span style="font-family:Verdana;">Conclusion</span></b></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><b><span style="font-family:Verdana;">:</span></b></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"></b></span></span></span><span><span><b><span style="font-family:""> </span></b></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">The positive rate and sensitivity of TB-IGRA were high, yet with poor specificity, so it was impossible to judge whether the cases belonged to active pulmonary tuberculosis. The combination of PPD and TB-DNA-PCR could improve the sensitivity, specificity and positive predictive value, and the diagnostic accuracy of active pulmonary tuberculosis, which showed satisfactory clinical value.展开更多
<b><span style="font-family:Verdana;">Objective:</span></b><span style="font-family:Verdana;"> To investigate the clinical diagnostic value of </span><span st...<b><span style="font-family:Verdana;">Objective:</span></b><span style="font-family:Verdana;"> To investigate the clinical diagnostic value of </span><span style="font-family:Verdana;">TB-IGRA (Tuber</span><span style="font-family:Verdana;">culosis-Interferon Gamma Release Assay), PPD (Intradermal T</span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">u</span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">b</span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">er</span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">culin Te</span></span></span><span><span><span style="font-family:;" "=""><span><span style="font-family:Verdana;">st), TB-DNA-PCR (Tuberculosis-Deoxyribonucleic-Polymerase Chain Reaction) and ADA(Adenosine Aeaminase) in tuberculous pleural effusion. </span><b></b></span><b><b><span style="font-family:Verdana;">Methods:</span></b><span></span></b><span style="font-family:Verdana;"> 60 patients with tuberculous pleural effusion discharged from our department from January 1, 2018 to December 31, 2019 were selected. Moreover, the TB-IGRA in peripheral blood, PPD test, TB-DNA-PCR and ADA in pleural effusion were detected. Subsequently, the positive rate, negative rate, sensitivity and omission diagnostic rate of</span></span><b> </b><span style="font-family:Verdana;">TB-IGRA, PPD, TB-DNA-PCR, ADA and combined</span><b> </b><span style="font-family:Verdana;">TB-IGRA were calculated. </span><b><b><span style="font-family:Verdana;">Results:</span></b><span style="font-family:Verdana;"></span></b><span style="font-family:Verdana;"> The positive rate and sensitivi</span></span><span><span style="font-family:Verdana;">ty</span><span style="font-family:Verdana;"> of</span><span> <span style="font-family:Verdana;">TB-IGRA, PPD</span><span style="font-family:Verdana;">,</span></span><span style="font-family:Verdana;">TB-DNA-PCR, and ADA were 95%, 71.67%,</span></span></span><span><span><span style="font-family:;" "=""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">5% and</span></span></span><span><span><span style="font-family:;" "=""><span style="font-family:Verdana;"> 86.67% respectively. The omission diagnostic rate was 5%, 28.33%, 95% and </span><span style="font-family:Verdana;">13.33%. TB-IGRA showed the highest positive rate and sensitivity, and TB</span><span style="font-family:Verdana;">-DNA-PCR represented the highest omission diagnostic rate. The sensitivity of TB-IGRA + PPD was 98.33%, while the omission diagnostic rate was 51.67%. The sensitivity of TB-IGRA + TB-DNA-PCR was 95%, while the omission diagnostic rate was 5%. The sensitivity of TB-IGRA + ADA was 100%, while the </span><span style="font-family:Verdana;">omission diagnostic rate was 0%. In addition, the TB-IGRA + ADA had the</span><span style="font-family:Verdana;"> highest sensitivity and the lowest omission diagnostic rate. </span><span style="font-family:Verdana;"><b></b></span><b><b><span style="font-family:Verdana;">Conclusion:</span></b><span style="font-family:Verdana;"></span></b></span><b><span> </span></b><span style="font-family:Verdana;">TB-IGRA has high positive rate, high sensitivity and low omission diagnostic rate, which is superior to the traditional sputum test for tuberculosis. Notably, the combination of PPD, TB-DNA-PCR, ADA is capable of improving the diagno</span><span style="font-family:Verdana;">sis rate, and the diagnosis rate can reach 100% when combined with ADA,</span><span style="font-family:Verdana;"> which is able to provide solid diagnostic value in clinical practice.</span></span></span>展开更多
文摘Background: Tuberculin skin test (TST)—is widely used for screening tuberculosis TB in migrants from high endemic countries of Africa and Asia. However, the cut-off point for clinical TB and Mtb infection is not well established in TB endemic countries of sub-Saharan Africa. In this study we compared the size of TST induration in smear positive pulmonary TB (PTB) patients, their house-hold contacts and community controls in high endemic setting in Ethiopia. Methods: In a health facility-based cross-sectional study, smear positive PTB patients were recruited. Their household contacts traced, and community controls were recruited from neighbourhoods. Sputum sample collected from patients were examined using smear microscopy. Participants were also tested by TST and QuantiFERON? -TB Gold In–Tube test (QFTGIT). Results: From a total of 224 study participants, skin test induration data were available for 48 PTB patients, 88 household contacts and 75 community controls. All 48 patients, 64 (72.2%) of the household contacts and 35 (46.7%) of the community controls had skin test induration ≥ 10 mm. Moreover, 44 (91.7%) PTB patients, 58 (65.9%) of the household contacts and 26 (34.7%) of the community controls had skin test induration ≥ 15 mm, respectively. The mean size of TST induration was significantly higher in TB patients (18.1mm) compared to that of household contacts (13.6 mm) and community controls (7.9 mm) (pMtb
文摘</span><b><span style="font-family:Verdana;">Purpose</span></b></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><b><span style="font-family:Verdana;">:</span></b></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"></b></span></span></span><span><span><span style="font-family:""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">The purpose of this article is </span></span></span><span><span><span style="font-family:""><span style="font-family:Verdana;">to investigate the clinical value of TB-IGRA</span><span style="font-family:Verdana;"> (Tuberculosis-Interferon </span><span style="font-family:Verdana;">Gamma Release Assay), PPD (Intradermal </span><span style="font-family:Verdana;">Terbuculin Test), TB-DNA-PCR (Tuberculosis-Deoxyribonucleic-Polymerase</span><span style="font-family:Verdana;"> Chain Reaction) and TB-Ab (Tuberculosis-Antibody) in diagnosing silicosis complicated with pulmonary tuberculosis. <b></span></span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><b><span style="font-family:Verdana;">Methods</span></b></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><b><span style="font-family:Verdana;">:</span></b></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"></b></span></span></span><span><span><b><span style="font-family:""> </span></b></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">53 cases of suspected silicosis complicated with pulmonary tuberculosis were selected in the time span ranging from February 2017 to May 2019. TB-IGRA test, PPD test, TB-DNA-PCR and TB-Ab detection were performed. The sensitivity, specificity, positive predictive value and negative predictive value were calculated. </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><b></span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><b><span style="font-family:Verdana;">Results</span></b></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><b><span style="font-family:Verdana;">:</span></b></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"></b></span></span></span><span><span><span style="font-family:""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">Silicosis and pulmonary tuberculosis were diagnosed in 11 cases, with an incidence of 20.75%. The positive rates of TB-IGRA, PPD, TB-DNA-PCR and TB-Ab were 66.04%, 30.19%, 5.67% and 26.42%, respectively. The sensitivity was 90.91%, 81.82%, 27.27% and 54.55% respectively. The specificity was 42.86%, 80.95%, 100% and 80.95% respectively. The positive predictive values were 28.57%, 50%, 100% and 42.86% respectively. The negative predictive values were 94.44%, 91.89%, 84% and 87.18%. The positive rate, sensitivity and negative predictive value of TB-IGRA were the highest, while the specificity of TB-DNA-PCR was the highest yet with low positive rate, sensitivity and positive predictive value. </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><b></span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><b><span style="font-family:Verdana;">Conclusion</span></b></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><b><span style="font-family:Verdana;">:</span></b></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"></b></span></span></span><span><span><b><span style="font-family:""> </span></b></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">The positive rate and sensitivity of TB-IGRA were high, yet with poor specificity, so it was impossible to judge whether the cases belonged to active pulmonary tuberculosis. The combination of PPD and TB-DNA-PCR could improve the sensitivity, specificity and positive predictive value, and the diagnostic accuracy of active pulmonary tuberculosis, which showed satisfactory clinical value.
文摘<b><span style="font-family:Verdana;">Objective:</span></b><span style="font-family:Verdana;"> To investigate the clinical diagnostic value of </span><span style="font-family:Verdana;">TB-IGRA (Tuber</span><span style="font-family:Verdana;">culosis-Interferon Gamma Release Assay), PPD (Intradermal T</span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">u</span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">b</span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">er</span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">culin Te</span></span></span><span><span><span style="font-family:;" "=""><span><span style="font-family:Verdana;">st), TB-DNA-PCR (Tuberculosis-Deoxyribonucleic-Polymerase Chain Reaction) and ADA(Adenosine Aeaminase) in tuberculous pleural effusion. </span><b></b></span><b><b><span style="font-family:Verdana;">Methods:</span></b><span></span></b><span style="font-family:Verdana;"> 60 patients with tuberculous pleural effusion discharged from our department from January 1, 2018 to December 31, 2019 were selected. Moreover, the TB-IGRA in peripheral blood, PPD test, TB-DNA-PCR and ADA in pleural effusion were detected. Subsequently, the positive rate, negative rate, sensitivity and omission diagnostic rate of</span></span><b> </b><span style="font-family:Verdana;">TB-IGRA, PPD, TB-DNA-PCR, ADA and combined</span><b> </b><span style="font-family:Verdana;">TB-IGRA were calculated. </span><b><b><span style="font-family:Verdana;">Results:</span></b><span style="font-family:Verdana;"></span></b><span style="font-family:Verdana;"> The positive rate and sensitivi</span></span><span><span style="font-family:Verdana;">ty</span><span style="font-family:Verdana;"> of</span><span> <span style="font-family:Verdana;">TB-IGRA, PPD</span><span style="font-family:Verdana;">,</span></span><span style="font-family:Verdana;">TB-DNA-PCR, and ADA were 95%, 71.67%,</span></span></span><span><span><span style="font-family:;" "=""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">5% and</span></span></span><span><span><span style="font-family:;" "=""><span style="font-family:Verdana;"> 86.67% respectively. The omission diagnostic rate was 5%, 28.33%, 95% and </span><span style="font-family:Verdana;">13.33%. TB-IGRA showed the highest positive rate and sensitivity, and TB</span><span style="font-family:Verdana;">-DNA-PCR represented the highest omission diagnostic rate. The sensitivity of TB-IGRA + PPD was 98.33%, while the omission diagnostic rate was 51.67%. The sensitivity of TB-IGRA + TB-DNA-PCR was 95%, while the omission diagnostic rate was 5%. The sensitivity of TB-IGRA + ADA was 100%, while the </span><span style="font-family:Verdana;">omission diagnostic rate was 0%. In addition, the TB-IGRA + ADA had the</span><span style="font-family:Verdana;"> highest sensitivity and the lowest omission diagnostic rate. </span><span style="font-family:Verdana;"><b></b></span><b><b><span style="font-family:Verdana;">Conclusion:</span></b><span style="font-family:Verdana;"></span></b></span><b><span> </span></b><span style="font-family:Verdana;">TB-IGRA has high positive rate, high sensitivity and low omission diagnostic rate, which is superior to the traditional sputum test for tuberculosis. Notably, the combination of PPD, TB-DNA-PCR, ADA is capable of improving the diagno</span><span style="font-family:Verdana;">sis rate, and the diagnosis rate can reach 100% when combined with ADA,</span><span style="font-family:Verdana;"> which is able to provide solid diagnostic value in clinical practice.</span></span></span>