The natural focus of tick-borne encephalitis of sheep and man in the Rhodope mountains (Bulgaria).
D000818:Animals; D000956:Antigens, Viral; D001096:Arachnid Vectors; D001921:Brain / Q000382:microbiology; D002031:Bulgaria; D003870:Dermacentor; D004669:Encephalitis Viruses, Tick-Borne / Q000276:immunology / Q000302:isolation & purification; D004675:Encephalitis, Tick-Borne / Q000453:epidemiology / Q000276:immunology / Q000382:microbiology / Q000662:veterinary*; D006041:Goats; D006385:Hemagglutination Inhibition Tests; D006801:Humans; D009500:Neutralization Tests; D012756:Sheep; D012757:Sheep Diseases / Q000453:epidemiology* / Q000276:immunology / Q000382:microbiology; D013987:Ticks
D000956:Antigens, Viral