CSU ext

Q fever - a bacterial disease caused by Coxiella burnetii primarily affecting sheep, goats, cattle and occasionally other animals such as cats. Q fever is a zoonotic disease that can affect humans who come in contact with infected animals or their surroundings.

Q Fever is a disease that must be reported to public health authorities

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birthing stall
Birthing sheep
How is it transmitted?  Usually by inhalation of contaminated barnyard dust, or from contact with infected uterine fluids, aborted fetuses and placentas.
Un-pasteurized (raw) milk and cheeses are  another source of infection for humans.
fetus
Aborted fetus

What are the signs in animals? Abortions in goats and sheep are typical of Q fever. Non pregnant animals may show no signs.

What are the symptoms in humans?  Symptoms appear 2-3 weeks after inhalation or eating contaminated food or water and include fever lasting 1-2 weeks, headache, chest or stomach pain, vomiting, and diarrhea. More serious cases of Q fever cause lung and liver infections and inflammation of the heart (endocarditis).

More information at Merck Vet Manual:
http://www.merckvetmanual.com/mvm/index.jsp?cfile=htm/bc/52000.htm&word=Q%2cfever