[The modelling of dynamic ascariasis infectivity and prevalence in foci of invasion].

Suggests a simple model for calculation of ascariasis invasion rate in the population living in temperate climate foci, based on a single copro-ovoscopic examination over the entire epidemic season or a certain period. Describes a method for model construction for various epidemic conditions and a computer program realizing this method. The model is applicable for operative assessment of current ascariasis infection rate and for planning preventive measures.

[Histochemical study of the RNA content and distribution in ascarid tissues].

The contents and distribution of RNA in tissues of Ascaris lumbricoides and A. suum under the effect of antihelminthic preparations (piperazine, oxygen and their combination) and with out them were studied. The effect of piperazine and oxygen as well as of their combination results in the fall of RNA in almost all tissues of helminths.