Accession Number : AD0645011

Title :   IXODOIDEA TICKS OF ALMA-ATA FOCUS OF TICK-BORNE ENCEPHALITIS,

Corporate Author : NAVAL MEDICAL RESEARCH UNIT NO 3 CAIRO (EGYPT) DEPT OF MEDICAL ZOOLOGY

Personal Author(s) : Matsegora,N. P.

Report Date : 1962

Pagination or Media Count : 5

Abstract : The period of 1954-1957 marked a study of Ixodes effected within the Alma-Ata focus of tick-borne encephalitis, located in the mountains of the Transiliisk Ala-Tau range at the altitude of 1000-3000 meters above sea level. Observations revealed presence within the focus of the following Ixodidae species: I. persulcatus, D. marginatus, D. pictus, H. punctata, and H. scupense. At the same time studies were made of the zonal distribution of Ixodidae and for this purpose the whole focus was divided into 4 vertical soil and geographic zones. The greatest numbers of I. persulcatus are encountered at the height of 1500-1900 meters in the zone of deciduous forest and its transition into coniferous woods. I. persulcatus and D. pictus are caught at altitudes lying more than 1000 meters above the sea level. The activity of I. persulcatus lasts for 4 months, with its peak numbers in May, while for D. marginatus the maximum abundance is recorded in April and for D. pictus in September. Tick-borne encephalitis incidence within the focus is registered at the time of the I. persulcatus activity, with the maximal numbers of patients befallen with this disease in June. (Author)

Descriptors :   (*TICKS, ECOLOGY), DISEASE VECTORS, ARBOVIRUSES, DISEASES, TREES, MOUNTAINS, PERIODIC VARIATIONS, EPIDEMIOLOGY, USSR

Subject Categories : Biology
      Microbiology

Distribution Statement : APPROVED FOR PUBLIC RELEASE