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| Effectiveness of recombinant Mycobacterium tuberculosis fusion protein skin test in screening for latent tuberculosis infection among HIV/AIDS patients |
| WANG Hui1, LI Jincheng1, LU Xing2, WANG Jinfu2, ZHU Limei3, LIU Qiao3
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1. Department of Chronic Infectious Disease Control and Prevention, Yangzhou Center for Disease Control and Prevention, Yangzhou, Jiangsu 225000, China;
2. The Third People's Hospital of Yangzhou, Yangzhou, Jiangsu 225000, China;
3. Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, Jiangsu 210000, China |
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Abstract Objective To evaluate the effectiveness of recombinant Mycobacterium tuberculosis fusion protein skin test (EC-ST) in screening for latent tuberculosis infection (LTBI) among HIV/AIDS patients, so as to provide insights into the applicability of EC-ST in LTBI screening among HIV/AIDS patients. Methods From April to June 2023, HIV/AIDS patients under management and treatment in Yangzhou City, Jiangsu Province, were selected as study subjects. Basic information was collected through questionnaire surveys. LTBI was screened by EC-ST and interferon-gamma release assay (IGRA). Taking IGRA results as the diagnostic standard, the positive rate, sensitivity, specificity and consistency rate of EC-ST, and the impact of CD4+T lymphocyte (CD4) counts on the screening effect of EC-ST were analyzed. Results A total of 523 HIV/AIDS patients were screened, including 458 males (87.57%) and 65 females (12.43%). The median age was 48.00 (interquartile range, 21.00) years. The positive rate of EC-ST was 7.27% and the positive rate of IGRA was 7.46%, with no statistically significant difference (P>0.05). The consistency rate of the two methods was 94.84%, and the Kappa value of 0.621 (95%CI: 0.489-0.752, P<0.05). The sensitivity of EC-ST was 64.10% and the specificity was 97.31%. Comparing the groups with CD4 counts <500 and ≥500 cells/μL, the consistency rates of the two methods were 95.32% and 94.44%, and the Kappa values were 0.568 and 0.650, respectively (both P<0.05). There were no statistically significant differences in the positive rates, sensitivity, and specificity of EC-ST (all P>0.05). Comparing the groups with CD4 counts <200 and ≥200 cells/μL, the consistency rates of the two methods were 96.55% and 94.62%, and the Kappa values were 0.648 and 0.619, respectively (both P<0.05). There were no statistically significant differences in the positive rates, sensitivity, and specificity of EC-ST (all P>0.05). Conclusion The effectiveness of EC-ST in screening for LTBI among HIV/AIDS patients is consistent with that of IGRA and is not affected by CD4 counts.
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Received: 08 March 2024
Revised: 13 June 2024
Published: 19 July 2024
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