Q fever, caused by <i>Coxiella burnetii</i>, is a bacterial zoonosis with a wide clinical spectrum that can be life-threatening and, in some cases, can become chronic.

A granulomatous inflammation leading to multiple granuloma formation, which is a specific type of inflammation. A granuloma is a focal compact collection of inflammatory cells, mononuclear cells predominating, usually as a result of the persistence of a non-degradable product and of active cell mediated hypersensitivity.