Isolation of strains of tick encephalitis from Microtus arvalis in the Szczecin District.
D000818:Animals; D003411:Arvicolinae; D004660:Encephalitis; D004671:Encephalitis, Arbovirus; D058872:Epidemics; D013987:Ticks; D014780:Viruses
ENCEPHALITIS, EPIDEMIC/virus