[A young infant with afebrile pneumonia caused by Chlamydia trachomatis]
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Updated: Aug 6, 2026

A Human Fallopian Tube Model for Investigation of C. trachomatis Infections
Published on: August 11, 2012
T Geis1, S Schilling, H Segerer
1Klinik für Kinder- und Jugendmedizin St. Hedwig, Krankenhaus Barmherzige Brüder Regensburg. tobias.geis@barmherzige-regensburg.de
Insights
Chlamydia trachomatis infection in pregnant women can transmit to infants, causing pneumonia. Early erythromycin treatment improved a neonate
Area of Science:
- Neonatal infections
- Pediatric respiratory diseases
- Chlamydia trachomatis research
Background:
- Urogenital Chlamydia trachomatis infections in pregnant women pose a transmission risk to newborns.
- Infant infections commonly manifest as conjunctivitis or nasopharyngeal infections.
- Pneumonia is a less frequent but serious complication of neonatal Chlamydia trachomatis.
Observation:
- A 5-week-old infant presented with poor feeding, staccato cough, and severe bronchopneumonia.
- Initial intravenous ampicillin and gentamicin therapy failed to improve respiratory status.
- Oxygen supplementation became necessary due to respiratory deterioration.
Findings:
- Addition of oral erythromycin led to significant clinical improvement.
- Polymerase chain reaction confirmed Chlamydia trachomatis in the infant's nasopharyngeal specimen.
- This case highlights a severe presentation of neonatal pneumonia due to Chlamydia trachomatis.
Implications:
- Erythromycin may be an effective treatment for Chlamydia trachomatis-induced neonatal pneumonia.
- Prompt diagnosis and appropriate antibiotic selection are crucial for managing severe infant respiratory infections.
- Understanding transmission routes and clinical presentations aids in preventing and treating neonatal Chlamydia trachomatis infections.
Abstract:
Pregnant women who have an urogenital Chlamydia trachomatis infection may transmit the infection to their infants. Conjunctivitis and nasopharyngeal infection are the most frequent manifestations. Less frequently the infants may develop pneumonia. We report a case of a 5-week-old girl with poor feeding, staccato cough and clinical signs of pneumonia. Chest radiography revealed severe bronchopneumonia. Despite of intravenous therapy with ampicillin and gentamicin respiration deteriorated and oxygen supplementation became necessary. After additional treatment with oral erythromycin (50 mg/kg per day) had been started the clinical condition improved. Polymerase chain reaction with a nasopharyngeal specimen was found to be positive for Chlamydia trachomatis.
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