[The level of antibodies to Epstein-Barr virus antigens in the blood serum of the inhabitants of southern Siberia and the Far East].

: Antibodies to Epstein-Barr virus have been detected in sera from 1538 healthy adult persons living in the south of Siberia and Far East. It has been shown that the virus infectivity varied from 77% in Russians of the Yakutsk ASSR to 100% in Orochi and Russians residing in the territory of the Gorno-Altai Autonomous Province. Antibody levels to the Epstein-Barr virus for inhabitants of the south regions were higher than those for inhabitants of the north regions.