[The probable utilization of the protective properties of the vector's saliva by the causative agents of specifically tick-borne infections].

It is proved that in the tick fluid saliva and in the cement plug produced by Rhipicephalus appendiculatus there are bactericidal substances very similar in their activity to the egg lysozyme. The possible role in the transmission and conservation of the specific tick-borne, insensitive to the lysozyme pathogens such as rickettsiae, tick-borne encephalitides virus and borreliae (pathogen of Lyme disease) is discussed. It is supposed, that bactericidal substances in the cement plug protect accumulated in it the tick-borne pathogens (TBE virus, borreliae) from the compete and destructive influence of the vulgar, mainly coccal microflora and from the purulent inflammation, which hinders not only tick feeding but probably specific tick-borne pathogens spreading in the vertebrate host.