[Etiological study on tick-borne spotted fever in northeast China].
D000818:Animals; D000907:Antibodies, Bacterial / Q000032:analysis; D002681:China; D005260:Female; D006801:Humans; D007303:Insect Vectors; D008297:Male; D051379:Mice; D012287:Rickettsiaceae / Q000276:immunology / Q000302:isolation & purification*; D012288:Rickettsiaceae Infections / Q000382:microbiology*; D012756:Sheep; D013987:Ticks / Q000382:microbiology*
D000907:Antibodies, Bacterial