[Problem of unpredictable anthropogenic exposure to the state of natural environment in countries of southwest Asia].

There is considered problem of the negative human impact on the environment in Russia and the countries of southwest Asia. The adverse impact of high-fluoride and high-arsenic drinking water in artificial endemic provinces and increased radiation background on the health of the population of Syria, Iraq, Bangladesh has been investigated. With the aim of prevention there has been recommended the improvement of the system for treatment of drinking water and the disposal of radioactive waste, performance of sanitary outreach activities and promotion of healthy lifestyles, the organization of periodic examinations of the population.

[Problems and perspectives in the hygienic regulation of biotechnological strains of microorganisms].

The state-of-the-art of hygienic standardization of biotechnological strains of microorganisms is considered. The last century's investigations accumulated abundant experimental data on the estimation of the adverse effect of the strains, formulated main guidelines for evaluating the negative activity of producing strains, and proposed a schematic diagram for toxicological and hygienic investigations of new biotechnological strains. Further studies made it possible to elaborate their human hazard classification, to improve study programs, to substantiate a priority list, and to develop approaches to assessing the occupational microbiological risk.

[Biotechnology manufacture as a possible source of environmental pollution and a risk factor for human health].

The biotechnology-oriented quantitative criteria and a plan of primary sanitary hygienic evaluation of pathogenicity of microorganisms-producers were first established. New evidence of the negative effects of strains-producers on microbiocenosis and self-purification of soils and reservoirs were obtained. The requirement of an all-round hygienic assessment of microorganisms-producers consisting of two mandatory steps, i.

[Technical progress in biotechnology: hygienic and ecological problems].

Hygienic aspects and ecologic problems arising due to the development of biotechnology are shown in the article. Necessity to work up the theory of the relationship between biological agents, the human body and ecological situation in different regions is also demonstrated. Principal directions of hygienic investigations are determined.

[The role of chemical composition of drinking water in predicting the incidence of urolithiasis].

Detailed observational data on urolithiasis incidence at the territory of the Amur Region are presented. 4 foci with a high level of disease incidence have been detected. The content of calcium, magnesium, and strontium has been determined in drinking water and correlation of urolithic disease rates with rations Ca/Sr and Mg/Sr were established.

[Sanitary microbiological standards for Bac. thuringiensis, a producer of bacterial insecticides, in plant products].

Survival of Bac. thuringiensis, producers of bacterial insecticides in plant products, was studied in the process of culinary and technological treatment (thermal treatment, preservation, etc.), depending on the extent of dissemination of plant raw material, type of the plant product and pattern of culinary treatment.