We describe the case of a 69-year-old male with a year-long history of
renal failure, Investigation revealed proliferative glomerulonephriti
s, cryoglobulinemia, and Q fever endocarditis, Renal tissue examinatio
n for the presence of Coxiella burnetii was positive, The patient was
treated by doxycycline and chloroquine; his clinical status, renal fai
lure, and chronic Q fever have dramatically improved.