[On a natural focus of tick exanthematous typhus in Tula District].
D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000453:epidemiology; D004199:Disease Vectors; D006168:Guinea Pigs; D006801:Humans; D013987:Ticks; D014438:Typhus, Epidemic Louse-Borne / Q000453:epidemiology*
O prirodnom ochage kleshchevogo sypnogo tifa v Tul'skoĭ oblasti.