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.
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.