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Adult bacterial conjunctivitis: resistance patterns over 12 years in patients attending a large primary eye care centre in the UK.

Silvester, A, Neal, T, Czanner, G, Briggs, M, Harding, S and Kaye, S (2016) Adult bacterial conjunctivitis: resistance patterns over 12 years in patients attending a large primary eye care centre in the UK. BMJ Open Ophthalmology, 1 (1). ISSN 2397-3269

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Abstract

Purpose: To determine whether there was a change in the resistance pattern of bacteria isolated from cases of conjunctivitis following the introduction of over-the-counter availability of chloramphenicol in 2005. Design and setting: Retrospective review of laboratory records for adult patients with suspected bacterial conjunctivitis between 2001 and 2012 attending the Royal Liverpool University Hospital. Participants: Patients with suspected bacterial conjunctivitis. Organisms were identified by standard laboratory methods. Scanty growth and normal flora were considered as a negative result. For positive results, susceptibility testing was undertaken as per British Society for Antimicrobial Chemotherapy guidelines. Main outcome measures: Prevalence of groups of bacteria associated with acute conjunctivitis and their resistance to chloramphenicol, ciprofloxacin, gentamicin, and methicillin. Results: A total of 8209 conjunctival swabs were reviewed; 1300 (15.8%) were considered positive, of which 977 (75.2%) and 323 (24.8%) bacteria were identified as Gram positive and Gram negative, respectively. Staphylococcus aureus was the most prevalent organism identified. Resistance of all bacterial isolates to chloramphenicol was 8.4% varying from 3.0% to 16.4% while that for ciprofloxacin and gentamicin was 16.4% and 14.0%, respectively. Methicillin resistance among S. aureus was 8.3%. Conclusion: Resistance to chloramphenicol has remained stable since being made available over the counter. Among Gram-positive bacteria, the most prevalent causative agent of bacterial conjunctivitis, chloramphenicol sensitivity remains high.

Item Type: Article
Uncontrolled Keywords: MRSA; conjunctivitis chloramphenicol resistance
Subjects: Q Science > QA Mathematics
R Medicine > R Medicine (General)
R Medicine > RE Ophthalmology
Divisions: Applied Mathematics (merged with Comp Sci 10 Aug 20)
Publisher: BMJ Publishing Group
Related URLs:
Date Deposited: 03 Oct 2019 11:41
Last Modified: 04 Sep 2021 08:46
DOI or ID number: 10.1136/bmjophth-2016-000006
URI: https://researchonline.ljmu.ac.uk/id/eprint/11455
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