Current approaches to the regulation of the number of carriers and vectors in the Central Caucasian high-mountain natural focus of the plague

The results of carrying out measures of nonspecific prevention of plague on the territory of the Central Caucasian high-mountain natural focus are presented.
When evaluating insecticidal treatment by the method of dusting Spermophilus musicus burrows with the drug "Biocifen", the effectiveness of 97 % was established for 27 days.
Concentrations of working solutions during wet disinfection containing cypermethrin and chlorpyrifos as active substances were determined.
To regulate the number of Spermophilus musicus – the main host of the plague microbe, drugs based on anticoagulants (DV bromadiolone - 0.25 %, diphenacum - 0.005 %, brodifacum - 0.25 %) were studied. Their efficiency is not lower than 80 %.
The conducted tests of insecticides and rodenticides, methods of their application can be used when carrying out extermination measures against vectors and hosts in natural plague foci in other territories.

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2. Methodological guidelines. MU 3.1.2565-09 «Carrying out emergency measures for disinsection and deratization in natural plague foci on the territory of the Russian Federation» (in Russian).

3. Tokhov Yu.M., Degtyarev D.Yu., Zhiltsova A.Yu. Modern approaches to the regulation of flea numbers in the Central Caucasian high-mountain natural plague center // Pest Management. 2021; 4: 9-11. (in Russian).

4. Methodological guidelines. MU 3.1.3012-12 «Collection, accounting and preparation for laboratory examination of blood-sucking arthropods in natural foci of dangerous infectious diseases» (in Russian).