title: Methicillin-resistant Staphylococcus aureus ocular infection: a 10-year hospital-based study.
abstract: OBJECTIVE
  To characterize the patient demographics, clinical features, and antibiotic susceptibility of ocular infections caused by methicillin-resistant Staphylococcus aureus (MRSA), including community-associated (CA) and healthcare-associated (HA) isolates.
  
  
  METHODS
  Retrospective, observational study.
  
  
  METHODS
  Patients (n = 519) with culture-proven S. aureus ocular infections seen between January 1, 1999, and December 31, 2008, in Chang Gung Memorial Hospital.
  
  
  METHODS
  Data collected included patient demographics and clinical information. Antibiotic susceptibility was verified by disc diffusion method.
  
  
  METHODS
  Proportion of MRSA in S. aureus ocular infections and the clinical characteristics, diagnoses, and antibiotic susceptibility patterns of CA-MRSA versus HA-MRSA ocular infections.
  
  
  RESULTS
  We identified 274 patients with MRSA ocular infections, which comprised 181 CA-MRSA and 93 HA-MRSA isolates. The average rate of MRSA in S. aureus infections was 52.8% with a stable trend, whereas the annual ratio of CA-MRSA in ocular MRSA infections averaged 66.1% and tended to increase over the 10-year interval. Patients with ocular CA-MRSA were younger. Lid and lacrimal system disorders were more common, but keratitis, endophthalmitis, and wound infection were less common among CA-MRSA cases than HA-MRSA cases. Both CA-MRSA and HA-MRSA isolates were resistant to clindamycin and erythromycin, but CA-MRSA was more susceptible to sulfamethoxazole/trimethoprim.
  
  
  CONCLUSIONS
  Community-associated MRSA is an important pathogen of ocular infections; CA-MRSA and HA-MRSA ocular infections differ demographically and clinically, but both strains were multi-resistant in Chang Gung Memorial Hospital, one of the biggest referral centers in Taiwan. In a country with a high prevalence of MRSA, ophthalmologists should be aware of such epidemiologic information.
authors.affiliation: Department of Ophthalmology, Chang Gung Memorial Hospital, Linkou, Taiwan.
authors.forename: Ching-Hsi
authors.initials: CH
authors.lastname: Hsiao
authors.forename: Chih-Chun
authors.initials: CC
authors.lastname: Chuang
authors.forename: Hsin-Yuan
authors.initials: HY
authors.lastname: Tan
authors.forename: David H K
authors.initials: DH
authors.lastname: Ma
authors.forename: Ken-Kuo
authors.initials: KK
authors.lastname: Lin
authors.forename: Chee-Jen
authors.initials: CJ
authors.lastname: Chang
authors.forename: Yhu-Chering
authors.initials: YC
authors.lastname: Huang
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000900:Anti-Bacterial Agents / Q000627:therapeutic use; D002648:Child; D002675:Child, Preschool; D017714:Community-Acquired Infections / Q000188:drug therapy / Q000453:epidemiology* / Q000382:microbiology; D024901:Drug Resistance, Multiple, Bacterial; D015818:Eye Infections, Bacterial / Q000188:drug therapy / Q000453:epidemiology* / Q000382:microbiology; D005260:Female; D006784:Hospitals, Teaching / Q000706:statistics & numerical data*; D006801:Humans; D007223:Infant; D008297:Male; D016106:Methicillin Resistance; D055624:Methicillin-Resistant Staphylococcus aureus / Q000302:isolation & purification*; D008826:Microbial Sensitivity Tests; D008875:Middle Aged; D012189:Retrospective Studies; D013203:Staphylococcal Infections / Q000188:drug therapy / Q000453:epidemiology* / Q000382:microbiology; D055815:Young Adult
chemical_list: D000900:Anti-Bacterial Agents