[Animal helminthisms and their zonal prevalence in the Orenburg Region].

In the 1980s, porcine ascariasis, animal strongyloidiasis, and ruminant moniesiases were commonest in the Orenburg Region. At present, among the nosological entities there is a preponderance of the same helminthisms, i.e. they have the pattern of steady-state invasions. The strongyloidiases are spread in all zones of the region, moniesiases of large and small cattle are in the central and eastern zones, respectively.