Cresswell, Fiona V; Ellis, Jayne; Kagimu, Enock; Bangdiwala, Ananta S; Okirwoth, Michael; Mugumya, Gerald; Rutakingirwa, Morris; Kasibante, John; Quinn, Carson M; Ssebambulidde, Kenneth; +11 more... Rhein, Joshua; Nuwagira, Edwin; Tugume, Lillian; Martyn, Emily; Skipper, Caleb P; Muzoora, Conrad; Grint, Daniel; Meya, David B; Bahr, Nathan C; Elliott, Alison M; Boulware, David R; (2020) Standardized Urine-Based Tuberculosis (TB) Screening With TB-Lipoarabinomannan and Xpert MTB/RIF Ultra in Ugandan Adults With Advanced Human Immunodeficiency Virus Disease and Suspected Meningitis. OPEN FORUM INFECTIOUS DISEASES, 7 (4). ofaa100-. ISSN 2328-8957 DOI: https://doi.org/10.1093/ofid/ofaa100
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Abstract
BACKGROUND: Diagnosis of extrapulmonary tuberculosis (TB) remains challenging. We sought to determine the prevalence of disseminated TB by testing urine with TB-lipoarabinomannan (TB-LAM) lateral flow assay and Xpert MTB/RIF Ultra (Ultra) in hospitalized adults. METHODS: We prospectively enrolled human immunodeficiency virus (HIV)-positive adults with suspected meningitis in Uganda during 2018-2020. Participants underwent standardized urine-based TB screening. Urine (60 mcL) was tested with TB-LAM (Alere), and remaining urine was centrifuged with the cell pellet resuspended in 2 mL of urine for Xpert Ultra testing. RESULTS: We enrolled 348 HIV-positive inpatients with median CD4 of 37 cells/mcL (interquartile range, 13-102 cells/mcL). Overall, 26% (90 of 348; 95% confidence interval [CI], 21%-30%) had evidence of disseminated TB by either urine assay. Of 243 participants with both urine TB-LAM and Ultra results, 20% (48 of 243) were TB-LAM-positive, 12% (29 of 243) were Ultra-positive, and 6% (14 of 243) were positive by both assays. In definite and probable TB meningitis, 37% (14 of 38) were TB-LAM-positive and 41% (15 of 37) were Ultra-positive. In cryptococcal meningitis, 22% (40 of 183) were TB-LAM-positive and 4.4% (6 of 135) were Ultra-positive. Mortality trended higher in those with evidence of disseminated TB by either assay (odds ratio = 1.44; 95% CI, 0.83-2.49; P = .19) and was 6-fold higher in those with definite TB meningitis who were urine Ultra-positive (odds ratio = 5.67; 95% CI, 1.13-28.5; P = .04). CONCLUSIONS: In hospitalized Ugandans with advanced HIV disease and suspected meningitis, systematic screening with urine TB-LAM and Ultra found a high prevalence of urine TB test positivity (26%). In those with TB meningitis, urine tests were positive in over one third. There was little concordance between Ultra and TB-LAM, which warrants further investigation.
Item Type | Article |
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Faculty and Department |
Faculty of Infectious and Tropical Diseases > Dept of Clinical Research Faculty of Epidemiology and Population Health > Dept of Infectious Disease Epidemiology & International Health (2023-) |
Research Centre | TB Centre |
PubMed ID | 32373646 |
Elements ID | 147518 |
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