[Investigation of the antiparasitic activity of paracels series apparatuses].

The paper provides a preliminary positive assessment of the results of experimental studies of the inactivating effect of a bioresonance technology against Lamblia cysts and Cryptosporidium oocysts placed in the aquatic environment in vitro.

[Expected epidemic risk from the minimum drinking water content of protozoan agents of enteric parasitic diseases].

The paper presents information on lambliasis and cryptosporidiosis outbreaks associated with drinking water contamination-associated. It discusses a risk for the emergence of mass outbreaks of lambliasis and cryptosporidiosis among the population of the municipalities of administrative district centers and other human settlements, which are to exercise sanitary and parasitological control over the quality of water of its centralized drinking supply. The significance of this water contamination by lamblia cysts and cryptosporidium oocysts is considered. Calculations are given to predict an epidemic risk and possible ways of its prevention.

[The role of the water factor in the dissemination of Toxocara eggs and the spread of toxocariasis in a megalopolis]. / Rol' vodnogo faktora v rasseivanii iaits Toxocara i rasprostranenii toksokaroza v usloviiakh megapolisa.

The water factor in transfer of the activators toxocariasis was not taken into account by parasitologists earlier. Yet in the urbanized ecosystems (first of all--in the megalopolis) it can have rather appreciable importance in distribution of toxocariasis in animals and man. Our researches which have been carried out in reservoirs of Moscow with the "wild" and the "organized" beaches, have revealed various, but as a whole their significant, of contaminations by invasion eggs Toxocara (Toxocara canis, T. mistax, and Toxascaris leonina). It specifies an opportunity of their hit in organism of the man and, as a consequence--toxocariasis. The examination of the patients toxocariasis of the people (first of all of children at the age of 3-10 years) have confirmed the fact of their bathing and involuntary swallow of water in urban unflowing reservoirs. In ecosystems of the megalopolis at a high level of parasite of pollution increased superinvasion of dogs and cats and free access of animals to internal reservoirs--the risk of infection of the people toxocariasis gradually grows.

[Sanitary parasitocenology. The subject, goals and tasks]. / Sanitarnaia parazitotsenologiia. Predmet, tseli i zadachi.

The necessity for developing a new parasitological discipline, such as sanitary parasitocenology, is evidenced. Training of specialists with a wide range of parasitological knowledge and goal-oriented complexation of the investigations of parasitologists of different profile are shown to be required. The necessity for elaborating the measures for disinfection of environmental objects is shown taking into account the degree of pathogenicity of each parasitocenosis.

[Water and intestinal parasitic diseases]. / Voda i kishechnye parazitozy.

The paper presents data on the rates of Lamblia cyst dissemination of surface water sources in foreign countries, the Russian Federation, Moscow, and the Moscow Region. It shows a role of drinking water in the spread of intestinal parasitic diseases. In accordance with parasitological parameters, specific data on improvement of methodological control of water quality are presented. The dosages of ultraviolet radiation are given in relation to water decontamination of parasitic disease germs.

[Seroepidemiologic characteristics of opisthorchiasis foci with various endemic levels]. / Seroépidemiologicheskaia kharakteristika ochagov opistorkhoza s raznym urovnem éndemii.

Combined coprological (by an ether-formol method) and serological (by solid-phase enzyme immunoassay--EIA) screening of the population to detect opisthorchiasis was performed in the settlements situated in the Ob, Dnieper and Northern Dvina basins. Disease rate in the hyperendemic area on the Ob exceeded 80%, by the results of coprological population screening, while annual infestation rate established on the basis of specific antibodies determination in the blood was 70%. Infestation and disease rates in mesoendemic area, at the Ob tributary and in the Dnieper basin were practically equal and accounted for 30-40%. Infestation rates in hypoendemic areas of the Dnieper and Northern Dvina basins exceeded those of the disease rate. Causes of this phenomenon are discussed. Double serological screening of population in the foci performed in summer-autumn and spring seasons demonstrated a considerable increase in infestation rate parameters in autumn and their decrease in spring. Seasonal character of infestation is better expressed in the mesoendemic areas than in the hyperendemic ones. Infestation and disease rates are discussed for various age groups in different areas.

[The sanitary parasitological characteristics of different sources of drinking water supply]. / Sanitarno-parazitologicheskaia kharakteristika razlichnykh istochnikov pit'evogo vodosnabzheniia.

In some CIS areas (Khabarovsk Territory, Moscow, Grodno, Odessa, Astrakhan, and Kzyl-Orda provinces), sewage, animal sewage, and sewage from the populated areas (82.3% of the samples tested), water in the surface reservoirs, sources of potable water supply (54.0%), and potable water (6.5%) were shown to contain viable agents of intestinal parasitic diseases, such as cysts of Lamblia and Balandia, eggs of ascarides, Trichuris trichiura, Diphyllobothrium, oncospheres of Taenia, etc.). This should be borne in mind in planning and implementing measures for sanitary protection of surface and underground potable water supply sources, recreational [correction of recreative] areas, for prevention of helminthiases and intestinal protozoan [correction of Proteus] infections.

[Ecological and hygienic conditions in the use of sewage sediments in agriculture]. / Ekologo-gigienicheskie usloviia ispol'zovaniia osadkov stochnykh vod v zemledelii.

Exposure of humans to heavy metals and helminthic eggs during agricultural utilization of sewage sediments is discussed. Recommendations for reducing or completely eliminating the risk of human exposure to heavy metals are offered.

[The spread of the principal socially important parasitic disease on the territory of the Chukot Autonomous Okrug (ChAO)]. / O rasprostranenii osnovnykh sotsial'no znachimykh parazitarnykh boleznei na territorii Chukotskogo Avtonomnogo Okruga (ChAO).

The paper provides the examination findings of helminthiases in the population of the town of Anadyr, the settlements of Kanchalan, Krasneno, and in the reindeer-breeding teams of the Anadyr District, CAD. The children infected with enterobiasis were shown to amount to 15.1 to 22.9%, diphyllobothriasis was detected in 12.9 - 33.7% of the examinees. Single cases of ascariasis were revealed. Analysis of 232 cases with echinococcosis demonstrates that the infection is prevalent over the whole Chukotka territory. Infection with Echinococcus multilocularis is more common in the indigenous population in the north-east of the District and that with Echinococcus granulosus in the central and northern regions. High extensive and intensive parasitic contamination rates of environmental objects, such as soil, sewage, household appliances, fish, etc., were noted, indicating a constant risk for Chukotka population's infection with parasites.

[The detection of opisthorchiasis foci in Byelorussia]. / Vyiavlenie ochagov opistorkhoza v Belorussii.

Local foci of opisthorchiasis have been established on the territory of 3 Belorussian districts (Brest, Gomel and Grodno provinces). Human beings, cats, fish and the first intermediate host mollusk invaded with Opisthorchis have been found.