[The circulation of the California encephalitis complex and Batai viruses in the Lake Baikal region (serological research data)]. / O tsirkuliatsii virusov kompleksa kaliforniiskogo éntsefalita i Batai v Pribaikal'e (dannye serologicheskikh issledovanii).

The serological materials of the indigenous population and cattle suggest that there are viral foci of a complex of California encephalitis with the circulation of viruses of Inkoo, Tahyna [correction of Tyagin], and the white hare. The results of examining the residents of Irkutsk also suggest that there are urban viral foci of a complex of California encephalitis. The epidemiological potential of the natural foci of Batai virus is insignificant in the Baikal region.

[Mosquito-borne arboviruses in the Baikal region]. / Peredavaemye komarami arbovirusy v pribaikal'e i zabaikal'e.

A total of 20 virus strains were isolated from arthropods and rodents in the Baikal region in 1992. Thirteen of these were California serogroup viruses, 4 Batai virus strains (Bunyaviridae, Bunyavirus), and 3 Gheta virus strains (Togaviridae, Alphavirus, Semliki complex). The rates of mosquito infection with California, Batai, and Gheta viruses were 1:6500, 1:24000, and 1:24000, respectively. The results of the neutralization test indicate the similarity of the isolated California complex strains to the mountain hare virus, the most pathogenic virus in this group.

[Increased invasiveness as one of the manifestations of phenotype variability of the plague microbe in fleas]. / Povyshenie invazivnosti kak odno iz proiavlenii fenotipicheskoi izmenchivosti chumnogo mikroba v blokhakh.

Experimental studies conducted on genetically connected virulent subcultures of Y. pestis showed that the death of albino mice infected by flea bite occurred earlier than in the animals infected by a syringe subcutaneously. A high invasiveness of Y. pestis subcultures isolated from fleas (in comparison with the initial strains and subcultures from the animals) persisted for 2--3 passages in their cultivation on artificial nutrient media.