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


METHODS
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.


CONCLUSIONS
A decline over the years in the positive rate of HTLV-1 antibodies among blood donors was revealed.
Chiyoda
S
S
Nagasaki Red Cross Blood Center, Showa.
Kinoshita
K
K
Egawa
S
S
Inoue
J
J
Watanabe
K
K
Ifuku
M
M
D000293:Adolescent; D000328:Adult; D000372:Agglutination Tests; D001782:Blood Donors; D002353:Carrier State / Q000453:epidemiology; D005260:Female; D015481:HTLV-I Antibodies / Q000097:blood*; D015490:HTLV-I Infections / Q000453:epidemiology* / Q000635:transmission; D006801:Humans; D007564:Japan / Q000453:epidemiology; D015459:Leukemia-Lymphoma, Adult T-Cell / Q000453:epidemiology / Q000517:prevention & control; D008297:Male; D008403:Mass Screening; D008875:Middle Aged; D011446:Prospective Studies; D016036:Seroepidemiologic Studies
D015481:HTLV-I Antibodies