[The characteristics of the accumulation and the possibility of the long-term preservation of the tick-borne encephalitis virus in ixodid ticks]. / Osobennosti nakopleniia i vozmozhnost' dlitel'nogo khraneniia virusa kleshchevogo éntsefalita v iksodovykh kleshchakh.

A method for tick-borne encephalitis virus reproduction was developed in female Ixodes ticks in the period of postlarval development, if they were kept at elevated temperature (23-37 degrees C). It ensures further conservation of the agent in carriers by decreasing tick maintenance temperature to 4 degrees C.

[Transfer of resistance against Ixodes ticks to vertebrates with the sera and lymphocytes of immune animals]. / Peredacha pozvonochnym rezistentnosti protiv iksodovykh kleshchei s syvorotkoi i limfotsitami immunnykh zhivotnykh.

Hyperimmune serum with the high content of antibodies to the saliva of noninfected ticks when injected into vertebrates, induced the development of resistance preventing the ticks from sticking to the skin and satiation, thus reducing the number of blood-sucking ticks reaching satiation and decreasing the weight of satiated ticks; as a result, the productivity of female ticks decreased the the number of ticks sharply dropped. When ticks infected with tick-borne encephalitis virus parasitized on the animals immune against the saliva antigens of noninfected ticks, the virus titers in the blood of these animals were lower than in the controls, and no infection of ticks, formerly free of the virus, occurred.