[Opisthorchiasis as a component in a mixed infection].

A survey of the same human contingents (children under 14 years and adults) in different zones of Ukraine revealed the opisthorchiasis foci of different intensity in the northeastern part of Polesye and in the forest-steppe zone. The affliction of adults ranged from 27.5 +/- 2.2% to 2.8 +/- 0.7%, that of children was from 14.5 +/- 2.3% to 0. In the foci of high and moderate tension, the trichocephaliasis prevalence was 10.2 +/- 0.7%, ascaridiasis 5.1 +/- 0.5%, amebiasis 2.4 +/- 0.7%, lambliasis 7.7 +/- 0.6%, and outside the foci these figures were lower (2.0 +/- 0.7%; 2.4 +/- 0.7%; 0.5 +/- 0.3%; 2.9 +/- 0.8%, respectively). In concurrent invasions and infections, the number of helminth eggs and protozoan cysts excreted by patients was significantly lower than in that in monoinvasion.