The epidemiology of Q fever.
D000818:Animals; D000917:Antibody Formation; D002417:Cattle; D002418:Cattle Diseases; D003381:Coxiella / Q000302:isolation & purification; D004199:Disease Vectors; D006041:Goats; D006801:Humans; D008892:Milk; D010920:Placenta / Q000382:microbiology; D011778:Q Fever / Q000453:epidemiology* / Q000209:etiology; D012756:Sheep; D012757:Sheep Diseases; D006113:United Kingdom; D015047:Zoonoses