Identification and antimicrobial resistance of extraintestinal pathogenic Escherichia coli from retail meats
| Autor: | Sherry Ayers, Jianghong Meng, Shaohua Zhao, Stuart A. Gaines, Patrick F. McDermott, Sonya Bodeis-Jones, Xiaodong Xia |
|---|---|
| Rok vydání: | 2011 |
| Předmět: |
Turkeys
Meat Tetracycline Swine Colony Count Microbial Virulence Food Contamination Drug resistance Microbial Sensitivity Tests Biology medicine.disease_cause Microbiology Antibiotic resistance Drug Resistance Multiple Bacterial Drug Resistance Bacterial medicine Escherichia coli Animals Humans Phylogeny Extraintestinal Pathogenic Escherichia coli Antimicrobial Anti-Bacterial Agents Meat Products Consumer Product Safety Ground turkey Chickens Food Science medicine.drug |
| Zdroj: | Journal of food protection. 74(1) |
| ISSN: | 1944-9097 |
| Popis: | Extraintestinal pathogenic Escherichia coli (ExPEC) causes a variety of infections outside the gastrointestinal tract. Retail meats are frequently contaminated with E. coli strains, and they might serve as a vehicle for transmitting ExPEC. A total of 1,275 E. coli isolates recovered from ground beef, ground turkey, chicken breasts, and pork chops obtained in Georgia, Maryland, Oregon, and Tennessee in 2006 were investigated for the presence of ExPEC by using multiplex PCR. Identified ExPEC isolates were assigned to serogroups and phylogenetic groups and then analyzed for antimicrobial susceptibility. Approximately 16% (200 of 1,275) of the E. coli isolates were identified as ExPEC, based on defined genetic criteria. The occurrence of ExPEC was highest in E. coli isolated from ground turkey (23.5%) and chicken breasts (20.2%), and less frequent in isolates from pork chops (8.3%) and ground beef (3.4%). Phylogenetic grouping revealed that most (66.5%) ExPEC isolates fell into the same phylogenetic groups (B2 and D) as did virulent human ExPEC strains. Among the 15 antimicrobial agents tested, resistance to tetracycline (67.0%), sulfisoxazole (59.5%), and streptomycin (46.0%) was most frequent. Most ExPEC isolates (n = 163 [81.5%]) were resistant to at least one antimicrobial agent, and more than half (n = 114 [57%]) exhibited resistance to at least three drugs. This study found that ExPEC strains, including antimicrobial-resistant strains, were frequent among E. coli recovered from retail meats, especially those from chicken and turkey products. These findings indicate a need to better understand the role of certain meat types as potential sources of human ExPEC infection. |
| Databáze: | OpenAIRE |
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