ABSTRACT
Q fever is caused by the rickettsia Coxiella burneti, an obligate intracelullar parasite microorganism. It usually takes the form of an acute systemic disease with sudden onset and symptoms of general malaise, chills and fever, myalgia and most chracteristically, severe headache. An interstitial pneumonia usually develops, the febrile period may last from 5 to 25 days or longer. Q fever is primarily a zoonosis an it is tipically an inapparent infection which is solidly established in domestic livestock the world over. Man is incidental to the natural maintenance of the disease whose principal animal reservoirs are ungulaes, rodents and in Australia, marsupials Tetracycline is the antibiotic preferred for Q fever therapy, it is administered orally (2.5 to 4 ger per day) divided in 4 dosis. Human cases of Q fever have been reported in all Latin american countries. Most human infection are derived from infected livestock, thus individuals such as slaughterhouse and dairy workers, herders, tanners, etc. should be protected