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dc.contributor.authorDwip Kitayapornen_US
dc.contributor.authorJaranit Kaewkungwalen_US
dc.contributor.authorSasitorn Bejrachandraen_US
dc.contributor.authorEkaraj Rungroungen_US
dc.contributor.authorDasnayanee Chandanayingyongen_US
dc.contributor.authorTimothy D. Mastroen_US
dc.contributor.otherHIV/AIDS Collaborationen_US
dc.contributor.otherMahidol Universityen_US
dc.contributor.otherCenters for Disease Control and Preventionen_US
dc.identifier.citationAIDS. Vol.10, No.10 (1996), 1157-1162en_US
dc.description.abstractObjectives: To determine HIV seroprevalence and incidence among various blood donor types, and to estimate the rate of window-period blood donations. Design: Retrospective cohort from computerized donor records. Methods: Records were analysed from all 60 483 donors (contributing 97 464 donor units) at a public university teaching hospital blood bank in Bangkok, Thailand, from 1 January 1990 to 30 June 1993. Annual HIV incidence among 14 482 repeat donors who were HIV-seronegative on their first donation was calculated assuming equal probability of seroconversion between last seronegative and first seropositive donations. To estimate the probability of window-period donations, we assumed that the time from HIV infectivity to onset of detectable antibody was 45 days. Results: In 1990, HIV incidence calculated for all repeat donors was 307 per 100 000 person-years; the probability of a window-period donation was 38 in 100 000 donations or one in 2644 donations. During 1991-1993, this probability decreased by one-half. However, one-time donors were more than twice as likely as repeat donors to be HIV-1-seropositive. Conclusions: The rate of HIV window-period blood donations among Thai repeat donors was relatively high compared with that in developed countries and was probably even higher among one-time donors. Improved donor deferral criteria are needed in Thailand.en_US
dc.rightsMahidol Universityen_US
dc.subjectImmunology and Microbiologyen_US
dc.titleEstimated rate of HIV-1-infectious but seronegative blood donations in Bangkok, Thailanden_US
Appears in Collections:Scopus 1991-2000

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