Coxiella burnetii phase II antigen for diagnosing Q-fever by CFT

The antigen is used for the detection of antibodies against Coxiella burnetii in the blood serum samples of humans and animals by the complement fixation (CF) test. The antigen can be applied for the detection of Coxiella burnetii phase II antibodies about 10 days after infection and thus, it is very useful for the diagnosis of acute Q fever in endemic areas.