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Published on: November 22, 2024
Acinetobacter junii as an aetiological agent of corneal ulcer
G Broniek1, E Langwińska-Wośko, J Szaflik
1Clinical Ophthalmological Hospital, Medical University of Warsaw, Warsaw, Poland.
Abstract:
Rods of the Acinetobacter genus are present mainly in the external environment (e.g. water, soil) and in animals, while in humans they may comprise physiological flora. The main pathogenic species is Acinetobacter baumannii complex, which constitutes a common cause of nosocomial infections, particularly in patients with underlying diseases and risk factors (e.g. prior broad-spectrum antibiotic therapy, malignancy, central venous catheter, mechanical ventilation); however, infections of the eye caused by strains of Acinetobacter spp. are very rare. We report a unique case of community-acquired corneal ulcer caused by Acinetobacter non-baumannii (possibly A. junii), in a patient with no risk factors identified. The case highlights the need for obtaining a sample from the cornea for bacteriological culture in the case of suspected ophthalmic infection as identification of the pathogen, and assessment of its susceptibility profile enables proper antibiotic therapy, improves the outcome and may constitute an eyesight-saving management.
Insights
A rare community-acquired corneal ulcer caused by Acinetobacter non-baumannii occurred in a patient without risk factors. Prompt bacterial culture and susceptibility testing are crucial for effective antibiotic therapy and vision preservation.
Area of Science:
- Ophthalmology
- Microbiology
- Infectious Diseases
Background:
- Acinetobacter species are environmental bacteria, with Acinetobacter baumannii complex being a common cause of hospital-acquired infections.
- Ocular infections due to Acinetobacter species are exceptionally rare, especially in the community setting.
Observation:
- A unique case of community-acquired corneal ulcer is presented.
- The ulcer was caused by Acinetobacter non-baumannii (suspected to be A. junii).
- The patient had no identifiable risk factors for such an infection.
Findings:
- This case underscores the possibility of Acinetobacter non-baumannii causing corneal ulcers outside of hospital settings.
- Bacteriological culture of corneal samples is essential for accurate pathogen identification.
Implications:
- Early identification of the causative Acinetobacter strain and its antibiotic susceptibility profile is critical.
- Appropriate antibiotic therapy guided by susceptibility testing can improve patient outcomes.
- Timely diagnosis and treatment may be vital for saving eyesight in cases of ophthalmic Acinetobacter infections.
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