Q fever pneumonia.

Q fever is a disease found in both humans and animals, caused by the bacterium Coxiella burnetii. The epidemiology of Q fever is that of the animal reservoirs of the infection including both direct and indirect contact and use of a variety of products from such animals as cattle, sheep, and goats. Pneumonia is the major manifestation of Q fever in some countries. It is mild to moderate in severity, and mortality is unusual. It can occur as sporadic or outbreak cases.