title: Comparison of two immunofluorescence tests for detecting antibodies to C. trachomatis.
abstract: Two immunofluorescence tests were compared for detecting antibodies to chlamydiae. The inclusion antigen test was more sensitive, detecting antibodies in more sera and at higher titres. The micro-IF test was more specific, differentiating between antibodies to C. trachomatis and those to C.IOL 207. Antibodies to this non-genital chlamydial type accounted for half the positive results. These antibodies can cause the prevalence of C. trachomatis infections to be over estimated when genus-specific serology tests are used.
mesh_terms: D000907:Antibodies, Bacterial / Q000032:analysis*; D000918:Antibody Specificity; D002690:Chlamydia Infections / Q000453:epidemiology* / Q000276:immunology; D002692:Chlamydia trachomatis / Q000276:immunology*; D005455:Fluorescent Antibody Technique; D006801:Humans
chemical_list: D000907:Antibodies, Bacterial