Coxiella burnetii phase I antigen for diagnosing Q-fever by MAR

The antigen is used for the detection of antibodies against Coxiella burnetii in the blood serum samples of humans and animals by the microagglutination reaction (MAR). It is especially applied for the detection of elevated levels of Coxiella burnetii phase I antibodies and thus, useful for both confirmation and therapeutic follow-up of the chronic Q fever in humans.