Recurrent culture-negative endocarditis and osteomyelitis caused by Q fever in Iran, a case report.

In this case report, we are presenting a man with intermittent fever for three months with a history of aortic and pulmonary valve replacement and also recurrent blood culture-negative endocarditis. After several evaluations based on endemic epidemiology, the Real-time PCR and IFA (indirect immunofluorescence assay) were positive for Q fever.