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Transfusion-transmitted HTLV-I/II infection in patients undergoing open-
heart surgery
JW Shih, HH Lee, M Falchek, M Canavaggio, BW Jett, JP Allain and HJ Alter
Department of Transfusion Medicine, National Institutes of Health,
Bethesda, MD 20892.
Sera from 5,244 blood donations collected between 1979 and 1987 were
screened for antibody to HTLV-I with an enzyme immunoassay (EIA) whose
result was confirmed with a two-step procedure including Western blot (WB)
and radio immunoprecipitation. Of 20 repeatedly reactive samples, two were
confirmed positive for HTLV-I infection. These blood units were transfused
to patients undergoing cardiac surgery. Both recipients of the confirmed
anti-HTLV-I positive units were infected with HTLV-I as evidenced by
antibody seroconversion. In contrast, six recipients of EIA positive, WB
indeterminate blood and nine recipients WB negative blood were not infected
with HTLV-I. These results confirm a low prevalence of HTLV-I infection in
US blood donors, the capacity of infected units to transmit the virus to
recipients, and the importance of an appropriate confirmatory assay.
Volume 75,
Issue 3,
pp. 546-549,
02/01/1990
Copyright © 1990 by The American Society of Hematology

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