Comparison of the immunological characters of a new virus "Negishi strain" and Russian spring-summer encephalitis virus.
D004660:Encephalitis; D004669:Encephalitis Viruses, Tick-Borne; D004671:Encephalitis, Arbovirus; D004675:Encephalitis, Tick-Borne; D058872:Epidemics
ENCEPHALITIS, EPIDEMIC