title: Bacteriological study of a natural focus of tularemia in the Lake Reserve of Srebrna, the Silistra region, Bulgaria.
mesh_terms: D000818:Animals; D002031:Bulgaria; D004197:Disease Reservoirs; D004199:Disease Vectors; D005604:Francisella tularensis / Q000302:isolation & purification; D006801:Humans; D008099:Liver / Q000382:microbiology / Q000473:pathology; D008322:Mammals; D012882:Skin Tests; D013154:Spleen / Q000382:microbiology / Q000473:pathology; D013987:Ticks; D014406:Tularemia / Q000175:diagnosis / Q000453:epidemiology* / Q000276:immunology