[Clinico-virologic analysis of the incidence of tick-borne encephalitis in the Khabarovskh region].

In the Soviet Union the incidence of tick-borne encephalitis is the highest in the geographical and epidemiological region adjacent to the Amur River (zone of coniferous and broad-leaved forests). 60.43% of all cases fall on years of cyclic rise of the disease incidence. Strains of the tick-borne encephalitis virus can be isolated with a more significant frequency from the blood of encephalitis-sick patients and from the brain of the dead in the years of disease outbreaks.