title: Role of Brucella and Coxiella burnetii infections in pyrexia of unknown origin.
mesh_terms: D000293:Adolescent; D000328:Adult; D000818:Animals; D002006:Brucellosis / Q000453:epidemiology*; D002648:Child; D005260:Female; D005335:Fever of Unknown Origin / Q000209:etiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011778:Q Fever / Q000453:epidemiology*; D015047:Zoonoses / Q000453:epidemiology*