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Causes
By Mayo Clinic staffCoxiella burnetii bacteria typically infect animals. The infection most commonly affects sheep, goats and cattle, but can also affect pets, such as cats, dogs, birds and rabbits. These mammals transmit the bacteria through their urine, feces, milk and birth products, such as placenta and amniotic fluid. When these substances dry, the bacteria in them become part of the barnyard dust that floats in the air. The infection is transmitted to humans through the lungs, when you inhale contaminated barnyard dust.
Rarely, you can get Q fever from drinking large amounts of unpasteurized milk or by being bitten by an infected wood tick.
- Q fever fact sheet Centers for Disease Control and Prevention. http://www.cdc.gov/ncidod/dvrd/qfever/. Accessed May 1, 2009.
- Hartzell JD, et al. Q fever: Epidemiology, diagnosis and treatment. Mayo Clinic Proceedings. 2008;83:574.
- Raoult D. Clinical features, diagnosis, treatment and prevention of Q fever. http://www.uptodate.com/home/index.html. Accessed May 1, 2009.
- Raoult D. Q fever endocarditis. http://www.uptodate.com/home/index.html. Accessed May 1, 2009.
- Maurin M, et al. Q fever. American Society for Microbiology Clinical Microbiology Reviews. 1999;12(4):518.
- Tissot-Dupont H. Q fever. Infectious Disease Clinics of North America. 2008;22:505.
- Marrie TJ, et al. Coxiella burnetii (Q fever). In: Mandell GL et al. Principles and Practice of Infectious Diseases. 6th ed. London: Churchill Livingstone; 2005. http://www.mdconsult.com/das/book/body/140205849-3/846136203/1259/1538.html#4-u1.0-B0-443-06643-4..50189-6_6250. Accessed May 1, 2009.
- Raoult D. Q Fever. In: Rakel RE. Conn's Current Therapy. 6th ed. Philadelphia: Saunders; 2008. http://www.mdconsult.com/das/book/body/140205849-3/846136203/1621/69.html#4-u1.0-B978-1-4160-4435-2..50036-4_501. Accessed May 1, 2009.
