[Some real problems of human opisthorchiasis]

Forty six sera from residents of the Novosibirsk Region in whom the diagnosis of chronic opisthorchiasis had been helminthoovoscopically verified were examined. In the thin layer immunoassay, of them 14 (30.4%) sera were responsive to excretory O. felineus antigens, 3 (7.9%) were to M. bilis antigens, and 29 (63.2%) were to the above antigens simultaneously. The results of these studies determine it possible to regard M. bilis methorchiasis as a zooanthroponous disease and a human being as a final host of this helminth.