Antimicrobial susceptibility of Escherichia coli isolated from humans and retail meat
Abstract number: 903_r2013
Multi-drug resistant food-borne pathogens have increased markedly in recent years. The need for an integrated surveillance system between human and veterinary microbiology laboratories has been emphasized by the World Health Organisation.
Escherichia coli strains were isolated from human samples (n = 653) in South Germany, and from retail poultry, pork and beef (n = 113) grown in the same area. Identical isolation and identification methods were used for both human and food samples. Antimicrobial susceptibility testing was performed for all isolates using the VITEK system (biomérieux).
All the human and animal strains were 100% susceptible to imipenem. Most isolates were susceptible to cefuroxime (94 and 98%, respectively) and gentamicin (97 and 95%, respectively). Susceptibility to ofloxacin was 90 and 93%, respectively; to piperacillin 66 vs. 79%, to ampicillin 60 vs. 65% and to cotrimoxazole 73 vs. 70%. Resistance among clinical isolates to tetracyclines was 34%, but was very high (60%) among food-borne isolates, which may reflect the frequent use of this substance group in animals husbandry.
Escherichia coli isolates from meat tend to be similarly resistant to commonly used antibiotics as isolates from humans. Further investigation is necessary to establish whether the source of the resistance in food isolates is directly related to antibiotic use in animal farming."
|Session name:||XXIst ISTH Congress|
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