PMID: 9424120Jan 10, 1998Paper

Detection of Chlamydia trachomatis in children with acute lower respiratory infection

Enfermedades infecciosas y microbiología clínica
V SavyE Cadario

Abstract

Diagnosis of respiratory tract infections due to Chlamydia trachomatis in pediatric patients is very important because of its complications and sequelae. The aim of the present study was to evaluate the performance of rapid methods for reading this diagnosis in 111 children with lower acute respiratory disease. Their nasopharyngeal aspirates were studied for detection of Chlamydia spp. antigens using enzyme immunoassay, indirect immunofluorescence and isolation in cell culture. The presence of respiratory viruses was also investigated for immunofluorescence. Chlamydia spp. were isolated from 16 samples (14.4%) using cell monolayer cultures. They were detected in 22 samples by immunofluorescence (19.8%) and in seven samples by enzyme immunoassay (6.5%). Respiratory viruses were detected in 77 samples (69.4%). Sixty two percent of cell culture positive samples for Chlamydia were also positive for respiratory syncytial virus and 6% were positive for adenovirus. Sensitivity and specificity of immunofluorescence were 37.5% and 83.1% respectively using Chlamydia cell culture as "golden standard". For enzyme immunoassay these percentages were 26 and 96.8% respectively. The values obtained are not acceptable for recommending these meth...Continue Reading

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