[Comprehensive assessment of an opisthorchiasis focus in the Komi-Permiak Autonomous Okrug].

Unfavourable sanitary and hygienic conditions in 2 settlements have been established; the authors revealed specific features of the invasion spreading in this focus where high invasion rates of intermediate and final hosts were associated with low invasion rates. Different factors have been established, which contribute to the invasion spreading among the population. A three-score assessment has been proposed of the manifestations of the clinical symptomatology in digestive disease in opisthorchiasis which is suitable for in the field. A retrospective analysis has been made of the reasons for ineffective chemotherapy with chloxyl in this focus. The age-related affliction with opisthorchiasis in the focus is the most adequately described by a "reversible catalytic" model with a force of infection of 0.055.