Formation of Modern Concepts on the Mechanism of Plague Enzooty

Abstract

Considered are main hypotheses that explain plague natural focality. The modern advances in the investigation of plague microbe genetic structure and its biofilms are demonstrated to play determinative role in interpretation of plague enzooty mechanism. Possible role of the nematodes in the transfer of plague microbe biofilms to the flea larvae is discussed. Considered is epizootiological significance of plague microbe trans-larval transfer for implementation of its vertical transmission from the soil biotope to the organism of warm-blooded animals. Analysis of flea larvae obtained in locations where plague persists, for the presence of plague agent, seems to be a promising approach as it can detect the readiness of the parasitic system of the natural focus for emergence and development of the epizooty.

Keywords

• plague natural focality
• plague epizooty
• inter-epizootic period
• plague microfocality
• plague microbe biofilm
• nematodes