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Published on: August 11, 2012
Persistence of chlamydial infection after treatment for neonatal conjunctivitis
Insights
Chlamydia trachomatis pharyngeal infections are common in infants with chlamydial conjunctivitis. Topical tetracycline alone was less effective than combined topical and oral antibiotics for treating infant chlamydial infections.
Area of Science:
- Ophthalmology
- Pediatrics
- Infectious Diseases
Background:
- Chlamydial conjunctivitis is a common neonatal infection.
- Pharyngeal infection with Chlamydia trachomatis can occur concurrently.
Purpose of the Study:
- To investigate the incidence of pharyngeal Chlamydia trachomatis infection in infants with conjunctivitis.
- To evaluate the efficacy of different antibiotic treatments.
Main Methods:
- Chlamydia trachomatis isolation from pharyngeal and ocular swabs before and after treatment.
- Comparison of treatment outcomes between topical tetracycline and combined topical tetracycline with oral erythromycin.
Main Results:
- Chlamydia trachomatis was isolated from 52% of infant pharynges before treatment.
- Treatment with topical tetracycline alone resulted in a significantly higher rate of C. trachomatis reisolation (75%) compared to combined therapy (32%).
- Minor ocular signs were noted with ocular reisolation; chest inflammation signs were found in 2/8 infants with persistent cough.
Conclusions:
- Pharyngeal C. trachomatis infection is prevalent in infants with chlamydial conjunctivitis.
- Combined topical and oral antibiotic therapy is more effective than topical therapy alone for eradicating C. trachomatis.
- Further investigation into C. trachomatis-related respiratory complications is warranted.
Abstract:
A high incidence of pharyngeal infection was found in babies with isolation-positive chlamydial conjunctivitis. Chlamydia trachomatis was isolated from the pharynx of 12 (52%) of 23 babies before treatment, and was reisolated from the eyes of 4 (12%) of 34 and from the pharynx of 14 (41%) of 34 after treatment. C trachomatis was reisolated significantly more often from babies treated only with topical tetracycline for 4 weeks (75%) than from those treated with both topical tetracycline and oral erythromycin for 2 weeks (32%). Reisolation from the eyes was associated with only minor clinical signs. Radiological signs of an inflammatory lesion in the chest were found in 2 of 8 babies examined because of persistent cough. These signs were not associated with high or rising titres of serum chlamydial antibody.
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