[Serological examination of the population of the Far East for the presence of antibodies to human T cell leukemia virus HTLV-1].

Antibodies to HTLV-1 were detected in sera from 1298 healthy adult persons living in the Far East. It is shown that virus infectivity of the Nigidalts was 8%, Nivkhs--2%, Udegeits--2.9%, Oroches--2.4%, Russians--0.9%. However, the incidence of acute leukemia in these regions is low. It is suggested that these regions are not endemic areas for HTLV-1-associated haemoblastoses.