ON THE QUESTION OF THE VECTORS OF CRIMEAN HEMORRHAGIC FEVER
Abstract
Of the rodents of the Crimea the only one on which we discovered larvae and nymphs of the tick H. marginatum was the hare L. europaeus transsylvanious. When ticks nymphs which had fed on these hares were examined in the laboratory, it was found that the ultravirus of Crimean hemorrhagic fever could be extracted from them. In the autumn season, the hares prefer to lie up and feed on hard fallow ground and by haystacks. It is in these spots that the greatest density of H. marginatum ticks is observed in summer months. These spots also constitute the most dangerous foci for the infection of humans with Crimean hemorrhagic fever. Study of birds in the districts where cases of the fever are reported is of very great significance, both from the point of view of the possibility of their acting as vectors of Crimean hemorrhagic fever and likewise from the point of view of the dissemination of the infected immature stages of H. marginatum ticks.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 21, 1951
- Accession Number
- AD0682854
Entities
People
- A. G. Grobov
Organizations
- United States Army Biological Warfare Laboratories