Complement Fixation Tests as an Aid in the Differential Diagnosis of Extra-Intestinal Amebiasis

摘要

Complement fixation tests were performed on 2592 individuals in a general hospital using a commercially prepared Endamoeba histolytica antigen. Positive reactions were obtained with the sera from 86 per cent of the cases of extraintestinal amebiasis, 15 per cent of the cases of intestinal amebiasis only and 0.7 per cent of the cases that had equivocal or no evidence of amebiasis.