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http://acervodigital.unesp.br/handle/11449/42321
- Title:
- Beef Carcass Contamination by Shiga Toxin-Producing Escherichia coli Strains in an Abattoir in Brazil: Characterization and Resistance to Antimicrobial Drugs
- Universidade de São Paulo (USP)
- Universidade Estadual Paulista (UNESP)
- 1535-3141
- Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
- FAPESP: 04/15600-4
- A survey was performed to estimate the frequency of Escherichia coli and Shiga toxin-producing E. coli (STEC) in carcasses obtained from an abattoir in Brazil between February 2006 and June 2007. A total of 216 beef carcasses were sampled at three stages of the slaughter process-preevisceration, postevisceration, and postprocessing-during the rain and dry seasons, respectively. of the carcasses sampled, 58%, were preevisceration E. coli positive, 38% were postevisceration positive, and 32% postprocessing positive. At the postprocessing stage, the isolation of E. coli was twice as high in the rain season. E. coli was isolated from 85 carcasses of which only 3 (1.4%) were positive for stx-encoding genes. No E. coli O157 serogroup isolates were detected. No antimicrobial resistance was found in nine of the isolates (10% of the total). The most frequent resistances were seen against cephalothin (78%), streptomycin (38%), nalidixic acid (36%), and tetracycline (30%). Multidrug resistance (MDR) to three or more antimicrobial agents was determined in 28 (33%) E. coli isolates. The presence of STEC and MDR strains among the isolates in the beef carcasses emphasizes the importance of proper handling to prevent carcass contamination.
- 1-Dec-2008
- Foodborne Pathogens and Disease. New Rochelle: Mary Ann Liebert Inc., v. 5, n. 6, p. 811-817, 2008.
- 811-817
- Mary Ann Liebert, Inc.
- http://dx.doi.org/10.1089/fpd.2008.0138
- Acesso restrito
- outro
- http://repositorio.unesp.br/handle/11449/42321
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