| Summary: | A representative sample of male and female Chukotka natives aged 25-6 years (362 persons) has been surveyed using the cross-sectional epidemiological method. The results have been compared with the data obtained when surveying a representative sample of the non-organised population of the same age in Novosibirsk (n = 2071 persons). The mean age was 43 years. The total count of white blood cells (WBC) in peripheral blood of Chukotka natives was lower than the corresponding values of that index in the inhabitants of Novosibirsk, the 10-90% range of white blood counts being 3.0-7.0 10(9)/l in natives and 4.0-9.0 10(9)/l in residents of Novosibirsk. A significant incidence of leukopenias (<4.0 10(9)/l) has been detected, being 30% in the population of Chukotka, 24% in men and 35% in women. Modification in White Blood Cells differentials (leukogram) has been found in native Chukotka people, particularly relative and absolute lymphocytopenia.
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