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

The antigen is used for the detection of antibodies against Coxiella burnetii in the blood serum samples of humans and animals by the indirect immunofluorescent assay (IFA). It is especially applied for the detection of Coxiella burnetii phase II IgM and IgG antibodies in early stages of infection and is very useful for the diagnosis of acute Q fever in endemic areas.