title: Chlamydia trachomatis infection in infants: a prospective study.
abstract: In a prospective study of Chlamydia trachomatis infection in pregnancy, 198 mothers positive for chlamydial antigen were identified; the infants of 174 were followed for up to six months and C trachomatis was recovered in cell culture from 43 infants (25%). Conjunctivitis occurred in significantly more infants who were positive for C trachomatis (20 of 43, 47%) than in those who were negative (18 of 131, 14%). There were also significantly more lower respiratory tract infections among infants with positive cultures (six of 43, 14%, compared with three of 131, 2%). The chlamydial antigen enzyme linked immunosorbent assay (ELISA) was positive in 61 of 131 infants from whom C trachomatis was not recovered in cell culture. False positive results were usually associated with the isolation of Staphylococcus aureus from samples of pharyngeal aspirate. Our results confirm that C trachomatis infection is a common cause of neonatal conjunctivitis, and respiratory infection in the first few months of life, with an incidence of 8.2/1000 live births. Because the infection is easily treated by oral erythromycin, however, screening during pregnancy is not warranted.
authors.affiliation: New Cross Hospital, Wolverhampton.
authors.forename: P M
authors.initials: PM
authors.lastname: Preece
authors.forename: J M
authors.initials: JM
authors.lastname: Anderson
authors.forename: R G
authors.initials: RG
authors.lastname: Thompson
mesh_terms: D002690:Chlamydia Infections / Q000453:epidemiology* / Q000635:transmission; D002692:Chlamydia trachomatis / Q000302:isolation & purification; D003235:Conjunctivitis, Inclusion / Q000453:epidemiology; D004797:Enzyme-Linked Immunosorbent Assay; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D011247:Pregnancy; D011251:Pregnancy Complications, Infectious / Q000453:epidemiology; D011446:Prospective Studies; D012141:Respiratory Tract Infections / Q000453:epidemiology