DISTRIBUTION AND RELATIONSHIPS BETWEEN FOCI OF TICKBORNE ENCEPHALITIS, TICK TYPHUS OF NORTHERN ASIA, AND Q FEVER IN WESTERN SIBERIA,
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)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1964
- Accession Number
- AD0645655
Entities
People
- G. I. Netsky
- M. S. Shaiman
Organizations
- Naval Medical Research Center