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7. Xpert Ultra Assay on Stool to Diagnose Pulmonary Tuberculosis in Children

Author

Kabir, Senjuti, primary, Rahman, S M Mazidur, additional, Ahmed, Shakil, additional, Islam, Md Shamiul, additional, Banu, Rupali Sisir, additional, Shewade, Hemant Deepak, additional, Thekkur, Pruthu, additional, Anwar, Sayeeda, additional, Banu, Nazneen Akhter, additional, Nasrin, Rumana, additional, Uddin, Mohammad Khaja Mafij, additional, Choudhury, Sabrina, additional, Ahmed, Shahriar, additional, Paul, Kishor Kumar, additional, Khatun, Razia, additional, Chisti, Mohammod Jobayer, additional, and Banu, Sayera, additional

Published
2020
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8. Xpert Ultra Assay on Stool to Diagnose Pulmonary Tuberculosis in Children.

Author

Kabir, Senjuti, Rahman, S M Mazidur, Ahmed, Shakil, Islam, Md Shamiul, Banu, Rupali Sisir, Shewade, Hemant Deepak, Thekkur, Pruthu, Anwar, Sayeeda, Banu, Nazneen Akhter, Nasrin, Rumana, Uddin, Mohammad Khaja Mafij, Choudhury, Sabrina, Ahmed, Shahriar, Paul, Kishor Kumar, Khatun, Razia, Chisti, Mohammod Jobayer, and Banu, Sayera

Subjects
TUBERCULOSIS diagnosis, FECAL analysis, CROSS-sectional method, CHILDREN'S hospitals, TERTIARY care, DECISION making, DIAGNOSIS, DESCRIPTIVE statistics, BIOLOGICAL assay, CHILDREN
Abstract

Background The World Health Organization recommends the Xpert MTB/RIF Ultra assay for diagnosing pulmonary tuberculosis (PTB) in children. Though stool is a potential alternative to respiratory specimens among children, the diagnostic performance of Xpert Ultra on stool is unknown. Thus, we assessed the diagnostic performance of Xpert Ultra on stool to diagnose PTB in children. Methods We conducted a cross-sectional study among consecutively recruited children (< 15 years of age) with presumptive PTB admitted in 4 tertiary care hospitals in Dhaka, Bangladesh, between January 2018 and April 2019. Single induced sputum and stool specimens were subjected to culture, Xpert, and Xpert Ultra. We considered children as bacteriologically confirmed on induced sputum if any test performed on induced sputum was positive for Mycobacterium tuberculosis and bacteriologically confirmed if M. tuberculosis was detected on either induced sputum or stool. Results Of 447 children, 29 (6.5%) were bacteriologically confirmed on induced sputum and 72 (16.1%) were bacteriologically confirmed. With "bacteriologically confirmed on induced sputum" as a reference, the sensitivity and specificity of Xpert Ultra on stool were 58.6% and 88.1%, respectively. Xpert on stool had sensitivity and specificity of 37.9% and 100.0%, respectively. Among bacteriologically confirmed children, Xpert Ultra on stool was positive in 60 (83.3%), of whom 48 (80.0%) had "trace call." Conclusions In children, Xpert Ultra on stool has better sensitivity but lesser specificity than Xpert. A high proportion of Xpert Ultra assays positive on stool had trace call. Future longitudinal studies on clinical evolution are required to provide insight on the management of children with trace call. [ABSTRACT FROM AUTHOR]

Published
2021
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