{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,7]],"date-time":"2026-06-07T09:28:29Z","timestamp":1780824509614,"version":"3.54.1"},"reference-count":20,"publisher":"Wiley","issue":"5","license":[{"start":{"date-parts":[[2018,3,23]],"date-time":"2018-03-23T00:00:00Z","timestamp":1521763200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/100004440","name":"Wellcome Trust","doi-asserted-by":"publisher","award":["106491"],"award-info":[{"award-number":["106491"]}],"id":[{"id":"10.13039\/100004440","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000865","name":"Bill and Melinda Gates Foundation","doi-asserted-by":"publisher","id":[{"id":"10.13039\/100000865","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Transfusion"],"published-print":{"date-parts":[[2018,5]]},"abstract":"<jats:sec><jats:title>BACKGROUND<\/jats:title><jats:p>Passive therapy with convalescent plasma provides an early opportunity to intervene in Ebola virus disease (EVD). Methods for field screening and selection of potential donors and quantifying plasma antibody are needed.<\/jats:p><\/jats:sec><jats:sec><jats:title>STUDY DESIGN AND METHODS<\/jats:title><jats:p>Recombinant Ebola virus glycoprotein (EBOV GP) was formatted into immunoglobulin G\u2010capture, competitive, and double\u2010antigen bridging enzyme immunoassays (EIAs). EVD survivors in Freetown, Sierra Leone, were recruited as potential plasma donors and assessed locally using sera alone and\/or paired sera and oral fluids (ORFs). Uninfected controls comprised unexposed Gambians and communities in Western Area, Sierra Leone. Antibody neutralization in selected sera was measured retrospectively in a pseudotype virus assay.<\/jats:p><\/jats:sec><jats:sec><jats:title>RESULTS<\/jats:title><jats:p>A total of 115 potential donors were considered for enrollment: 110 plasma samples were concordantly reactive in the three EIAs; three were concordantly unreactive and two were reactive in two of three EIAs (98.2% agreement; 95% confidence interval [CI], 93.9%\u201099.8%). In 88 donors with paired ORF and plasma, G\u2010capture EIA reactivity correlated well in the two analytes (R<jats:sup>2<\/jats:sup>\u2009=\u20090.795). Plasma and ORF from 44 Gambians were unreactive. ORF samples from 338 of 339 unexposed Western Area community controls were unreactive (specificity, 99.7%; 95% CI, 98.4%\u201099.7%); ORF samples from 113 of 116 Kerry Town EVD survivors were reactive (sensitivity, 97.4%; 95% CI, 92.5%\u201099.5%). Strong reactivity in G\u2010capture and\/or competitive EIAs identified donors with high plasma EBOV GP antibody levels in the double\u2010antigen bridging assay, correlating with high levels of neutralizing antibody.<\/jats:p><\/jats:sec><jats:sec><jats:title>CONCLUSIONS<\/jats:title><jats:p>In\u2010field testing can qualify convalescent donors for providing high\u2010titer antibody.<\/jats:p><\/jats:sec>","DOI":"10.1111\/trf.14580","type":"journal-article","created":{"date-parts":[[2018,3,24]],"date-time":"2018-03-24T04:01:22Z","timestamp":1521864082000},"page":"1289-1298","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":24,"title":["Detection, characterization, and enrollment of donors of Ebola convalescent plasma in Sierra Leone"],"prefix":"10.1111","volume":"58","author":[{"given":"Richard S.","family":"Tedder","sequence":"first","affiliation":[{"name":"Blood Borne Virus Unit"},{"name":"Transfusion Microbiology National 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UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Colin S.","family":"Brown","sequence":"additional","affiliation":[{"name":"King's Sierra Leone Partnership, King's Centre for Global Health, King's Health Partners and King's College London"},{"name":"Reference Microbiology, National Infection Service"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nick","family":"Andrews","sequence":"additional","affiliation":[{"name":"Statistics, Modelling and Economics Department Public Health England London UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Judith R.","family":"Glynn","sequence":"additional","affiliation":[{"name":"Department of Infectious Disease Epidemiology London School of Hygiene and Tropical Medicine"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Johan","family":"van Griensven","sequence":"additional","affiliation":[{"name":"Department of Clinical Sciences Institute of Tropical Medicine Antwerp 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