Accession Number : AD0645655

Title :   DISTRIBUTION AND RELATIONSHIPS BETWEEN FOCI OF TICKBORNE ENCEPHALITIS, TICK TYPHUS OF NORTHERN ASIA, AND Q FEVER IN WESTERN SIBERIA,

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

Personal Author(s) : Netsky,G. I. ; Shaiman,M. S.

Report Date : 1964

Pagination or Media Count : 10

Abstract : Among infections with natural facality transmitted by Ixodidae ticks, tick-borne encephalitis and tick typhus represent infections which form foci only among wild vertebrates, while Q fever represents those forming independent foci also among farm and domestic animals. The main species of Ixodes ticks of Western Siberia - Dermacentor pictus, D. marginatus, D. silvarum, and Ixodes persulcatus - have been found to be spontaneously infected with tick-borne encephalitis and tick typhus. Serological survey of the local population, farm animals and wild small mammals (the complement-fixation test) revealed the presence of tick typhus and Q fever in all landscape zones of Western Siberia, except for the uninvestigated extreme north, and in all areas where cases of tick-borne encephalitis and Omsk hemorrhagic fever are reported, as well as common sources of infection with tick-borne encephalitis and tick typhus. It is suggested that polyvectoral and polyhostal natural foci of these 3 infections arise simultaneously on a vast territory within the habitat of the above species of Ixodes ticks in Western Siberia. (Author)

Descriptors :   (*TICKS, DISEASE VECTORS), ARBOVIRUSES, DISEASES, ECOLOGY, SERODIAGNOSIS, EPIDEMIOLOGY, COXIELLA, OMSK VIRUS, SIBERIA, USSR

Subject Categories : Biology

Distribution Statement : APPROVED FOR PUBLIC RELEASE