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  • Title: [Epidemiological profile and antibiotic resistance of Pseudomonas aeruginosa isolates in burn and traumatology center in Tunisia over a three-year period].
    Author: Zoghlami A, Kanzari L, Boukadida J, Messadi AA, Ghanem A.
    Journal: Tunis Med; 2012 Nov; 90(11):803-6. PubMed ID: 23197059.
    Abstract:
    BACKGROUND: Pseudomonas aeruginosa is a known opportunistic pathogen frequently causing serious infections in burned patients. AIM: To analyze the epidemiological profile of Pseudomonas aeruginosa isolated in a Tunisian burn unit. METHODS: During a 3-year period (from 01 July 2008 to 30 June 2011), 544 non repetitive strains of P. aeruginosa were isolated from burn patients. Susceptibility to antibiotics was assessed according to CA-SFM guidelines. Serotypes were identified by slide agglutination test using P.aeruginosa O antisera (Biorad). Producing carbapenemase was analyzed for 202 imipenem resistant isolates by EDTA test. Susceptibility testing data were stored in a laboratory data base using whonet 5.3 software. RESULTS: The most frequent sites of isolation were cutaneous infections and blood cultures (83.4%). The percentages of resistant isolates were as follows: ceftazidime: 34%; imipenem: 37.1%, ciprofloxacin: 27.1% and amikacin: 29.6%. The most prevalent serotypes were: 011(51%), 06(17%), 03 (8%), 04(12%), 012(5%). Among the 202 imipenem resistant strains, 58% expressed a metallocarbapenemase. All theses strains were resistant to all tested antibiotics except colistin and belonged to the serotype O11. CONCLUSION: The dissemination of carbapenemases strains must be contained by implementation of timely identification, strict isolation methods and better hygienic procedures.
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