title: [Chlamydia trachomatis immunotypes in trachoma epidemic areas of north China].
abstract: The distribution of various immunotypes of C. trachomatis in epidemic areas of North China was studied by the micro-immunofluorescence (Micro-IF) test of tears and sera from 104 patients with trachoma. IgG antibody to C. trachomatis was positive in 64 cases, and the immunotypes were type B (78.1%) and type C (21.9%). The TE-55 strain determined as type I in 1966 was confirmed to be type C. The Micro-IF test that quantitated antichlamydial IgG antibody in tears was compared with ELISA in the detection of C. trachomatis in 59 individuals. The sensitivity and specificity of the Micro-IF test were 91.5% and 100% respectively.
authors.affiliation: Beijing Institute of Ophthalmology.
authors.forename: L
authors.initials: L
authors.lastname: Zhang
mesh_terms: D000293:Adolescent; D000907:Antibodies, Bacterial / Q000032:analysis*; D000918:Antibody Specificity; D002681:China; D002692:Chlamydia trachomatis / Q000145:classification / Q000276:immunology*; D004797:Enzyme-Linked Immunosorbent Assay; D015200:Fluoroimmunoassay / Q000379:methods; D006801:Humans; D007074:Immunoglobulin G / Q000032:analysis; D013666:Tears / Q000737:chemistry; D014141:Trachoma / Q000097:blood / Q000276:immunology*
chemical_list: D000907:Antibodies, Bacterial; D007074:Immunoglobulin G