SCIENTIFIC REPORT
Prevalence and spectrum of bacterial co-infection during fungal keratitis
1 Department of Ophthalmology and Visual Science, University of Kentucky College of Medicine, Lexington, KY, USA
2 Sid W Richardson Ocular Microbiology Laboratory, Cullen Eye Institute, Department of Ophthalmology, Baylor College of Medicine, Houston, TX, USA
Correspondence to:
Correspondence to:
Kirk R Wilhelmus
Sid W Richardson Ocular Microbiology Laboratory, Department of Ophthalmology, Baylor College of Medicine, 6565 Fannin Street, Houston, TX 77030, USA; kirkw{at}bcm.tmc.edu
Aims: To estimate the propensity of keratomycosis for parallel or secondary bacterial infection and to explore affinities among fungal and bacterial co-isolates.
Methods: A retrospective review of laboratory records over 24 years yielded 152 episodes of culture positive fungal keratitis. After collating 65 corneal specimens having bacterial co-isolates, polymicrobial co-infection was defined as detection of concordant bacteria on smear and culture or on two or more different media.
Results: 30 (20%) keratomycoses met laboratory criteria for polymicrobial infection. The risk of bacterial co-infection was 3.2 (95% confidence interval, 1.7 to 5.8) times greater with yeast keratitis than with filamentous fungal keratitis.
Conclusions: Bacterial co-infection occasionally complicates fungal keratitis, particularly candidiasis.
Keywords: bacterial co-infection; fungal keratitis
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Br. J. Ophthalmol. 2006 90: 257-258.
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