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dc.contributor.authorLuchters, S
dc.contributor.authorTechnau, K
dc.contributor.authorMohamed, Y
dc.contributor.authorChersich, MF
dc.contributor.authorAgius, PA
dc.contributor.authorPham, MD
dc.contributor.authorGarcia, ML
dc.contributor.authorForbes, J
dc.contributor.authorShepherd, A
dc.contributor.authorCoovadia, A
dc.contributor.authorCrowe, SM
dc.contributor.authorAnderson, DA
dc.date.accessioned2020-12-09T23:09:28Z
dc.date.available2020-12-09T23:09:28Z
dc.date.issued2019-02-01
dc.identifierpii: JCM.01277-18
dc.identifier.citationLuchters, S., Technau, K., Mohamed, Y., Chersich, M. F., Agius, P. A., Pham, M. D., Garcia, M. L., Forbes, J., Shepherd, A., Coovadia, A., Crowe, S. M. & Anderson, D. A. (2019). Field Performance and Diagnostic Accuracy of a Low-Cost Instrument-Free Point-of-Care CD4 Test (Visitect CD4) Performed by Different Health Worker Cadres among Pregnant Women. JOURNAL OF CLINICAL MICROBIOLOGY, 57 (2), https://doi.org/10.1128/JCM.01277-18.
dc.identifier.issn0095-1137
dc.identifier.urihttp://hdl.handle.net/11343/253158
dc.description.abstractMeasuring CD4 counts remains an important component of HIV care. The Visitect CD4 is the first instrument-free low-cost point-of-care CD4 test with results interpreted visually after 40 min, providing a result of ≥350 CD4 cells/mm3 The field performance and diagnostic accuracy of the test was assessed among HIV-infected pregnant women in South Africa. A nurse performed testing at the point-of-care using both venous and finger-prick blood, and a counselor and laboratory staff tested venous blood in the clinic laboratory (four Visitect CD4 tests/participant). Performance was compared to the mean CD4 count from duplicate flow cytometry tests on venous blood (FACSCalibur Trucount). In 2017, 156 patients were enrolled, providing a total of 624 Visitect CD4 tests (468 venous and 156 finger-prick samples). Of 624 tests, 28 (4.5%) were inconclusive. Generalized linear mixed modeling showed better performance of the test on venous blood (sensitivity = 81.7%; 95% confidence interval [CI] = 72.3 to 91.1]; specificity = 82.6%, 95% CI = 77.1 to 88.1) than on finger-prick specimens (sensitivity = 60.7%; 95% CI = 45.0 to 76.3; specificity = 89.5%, 95% CI = 83.2 to 95.8; P = 0.001). No difference in performance was detected by cadre of health worker (P = 0.113) or between point-of-care versus laboratory-based testing (P = 0.108). Adequate performance of Visitect CD4 with different operators and at the point of care, with no need of electricity or instrument, shows the potential utility of this device, especially for facilitating decentralization of CD4 testing services in rural areas.
dc.languageEnglish
dc.publisherAMER SOC MICROBIOLOGY
dc.rights.urihttps://creativecommons.org/licenses/by/4.0
dc.titleField Performance and Diagnostic Accuracy of a Low-Cost Instrument-Free Point-of-Care CD4 Test (Visitect CD4) Performed by Different Health Worker Cadres among Pregnant Women
dc.typeJournal Article
dc.identifier.doi10.1128/JCM.01277-18
melbourne.affiliation.departmentMicrobiology and Immunology
melbourne.affiliation.departmentUniversity General
melbourne.source.titleJournal of Clinical Microbiology
melbourne.source.volume57
melbourne.source.issue2
dc.rights.licenseCC BY
melbourne.elementsid1357491
melbourne.contributor.authorLuchters, Stanley
melbourne.contributor.authorAnderson, David
dc.identifier.eissn1098-660X
melbourne.accessrightsOpen Access


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