Serological evidence of the distribution of California serogroup viruses in the U.S.S.R.
The highest levels of humoral immunity (50%–90%) to California serogroup viruses were found in humans in northern Eurasia in the zone of coniferous forests. In the central regions of European Russia, in the zone of mixed and deciduous forests, the frequency of positive findings was about 30%–40%, and in the forest-steppe and steppe zones and in the arctic regions of Eurasia 10%–20%. Similar results were obtained with serum samples from domestic animals. Other results of these studies provide evidence of sympatric occurrence of Tahyna and Inkoo viruses. The highest activity of Inkoo virus was obtained in central U.S.S.R. and of Tahyna virus in southern U.S.S.R.
KeywordsConiferous Forest Neutralization Test Steppe Zone Snowshoe Hare Volgograd Region
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