Decline in the positive rate of human T-lymphotropic virus type-1 (HTLV-1) antibodies among blood donors in Nagasaki

Abstract

Objective The aim of this study was to clarify the trend of the HTLV-1 seroprevalence rate among blood donors. Methods Samples were screened by the particle agglutination test for HTLV-1 antibodies. Materials Serum from blood donors was screened. Results The positive rate of HTLV-1 antibodies among blood donors decreased from 13.14 to 0.81 % over the years from 1928 to 1983. Conclusion A decline over the years in the positive rate of HTLV-1 antibodies among blood donors was revealed.