[The state of radioactive pollution in the Techa River].

The concentration of radionuclides in the upper river water depends on radionuclides flow from the Techa Cascade of Reservoirs (TCR) with filtration waters and water of bypass canals. Further concentration dynamics over the river depends on floodplain and bottom sediments contamination level. Perennial concentration dynamics of 90Sr and 137Cs in the Techa River water is stably decreases. At present time concentration of 90Sr in the water depends on TCR inflow mainly and concentration of 137Cs depends on the outflow from contaminated swampy floodplain of the upper rive. From the dam-11 to the river entry radionuclides content in the silt, as well as in the water is stably decreases. Specific activity of 137Cs in the silts is 5 rates higher than in the water and 90Sr - 3 rates higher. In the silts 137Cs prevails in the difficult of access forms, 90Sr prevails in the exchangeable and moveable forms. The highest contamination density of floodplain soils is registered in the Asanov and Muslyumov swamps area. With time content of 90Sr and 137Cs planes along the soil septh, so overall deposits are decreases. The floodplain soils contains 66.5% of 90Sr in water soluble and exchangeable forms and 94.3% of 137Cs in difficult of access forms.

[Present-day 90Sr and 137Cs contamination levels of soil and agricultural products in the East-Urals Radioactive Trace area].

Data represent present-day 90Sr and 137Cs contamination levels of soil and agricultural products (grain, vegetables and forage crops, milk and meat) in the East-Urals Radioactive Trace area, and the accumulation coefficients of these radionuclides in cash crop.

[Rise in the epizootic activity of a natural focus of steppe-type tularemia in Stavropol Territory and its epidemic consequences]. / Pod"em épizooticheskoi aktivnosti prirodnogo ochaga tuliaremii stepnogo tipa v Stavropol'skom krae i ego épidemicheskie posledstviia.

One of recurrent autumn and winter rises in the epizootic activity of the steppe-type focus of tularemia in the Stavropol Territory is described. During the tularemia epizooty of 1981-1982 the population of common voles (Microtus arvalis) was very numerous, while the population of house mice (Mus musculus) was comparatively scarce. Francisella tularensis strains were isolated from different species of rodents (Microtus arvalis, Mus musculus, Apodemus sylvanicus, Rattus norvegicus, Lepus, etc.), from fleas and ticks, as well as from environmental objects (well-water, hay). 38 cases of the disease among nonvaccinated persons, mainly in rural areas, were registered. Anginous-bubonic tularemia was the dominant form of the disease. A complex of measures aimed at the detection of tularemia and its liquidation among the population was carried out.