THE STRUCTURE OF A NATURAL TULAREMIA FOCUS OF THE FLOOD PLAIN TYPE
Abstract
The active or elementary foci of tularemia are located on small unflooded areas which are among the extensive territories solidly inundated during the floods. The elementary foci are stable--the tularemia infection is found in them every year. The elementary foci are characterized by their multiple-vector and multiple-host nature. The maintenance and circulation of the infection in them are maintained by two species of ixodial ticks-- Dermacentor marginatus and Rhipicephalus rossicus--and by a number of species of rodents highly sensitive to tularemia--the water rat, meadow vole, house mouse and common hamster. A characteristic feature of the elementary foci is the seasonal concentration of small rodents on their territory, particularly the water rat, which is brought about by the flood. A considerable number of the larvae and nymphs of ixodial ticks feeds on these rodents and is responsible for maintaining the tularemia infection.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 21, 1963
- Accession Number
- AD0678894
Entities
People
- N. G. Olsufev
- N. I. Makarov
- V. G. Petrov
- V. P. Borodin
- V. V. Kucheruk
Organizations
- United States Army Biological Warfare Laboratories