Complement Fixation for Lymphogranuloma Venereum and for Psittacosis with Frei Reactions among Pneumonia Patients

[摘要] Complement fixation with Lygranum antigen occurred with sera from Freipositive patients who showed symptoms of lymphogranuloma venereum infection and with sera from Frei-positive patients who had neither symptoms nor a past history of infection. Eighteen Frei-positive reactors, without manifest disease, were found in one hundred and seventy-five pneumococcic pneumonia patients. Cross complement-fixation reactions have been demonstrated with the antigens of lymphogranuloma venereum and psittacosis viruses. Therefore, for the diagnosis of lymphogranuloma venereum, complement fixation must be corroborated by a positive Frei test. In the absence of a positive Frei test, positive complement fixation with Lygranum antigen may indicate the presence of psittacosis or allied viral infection.

[学科分类] 生物科学（综合）