| Autor: |
Harrison L; U.S. Food and Drug Administration, Center for Veterinary Medicine, Laurel, MD 20708, USA., Tyson GH; U.S. Food and Drug Administration, Center for Veterinary Medicine, Laurel, MD 20708, USA., Strain E; U.S. Food and Drug Administration, Center for Veterinary Medicine, Laurel, MD 20708, USA., Lindsey RL; Centers for Disease Control and Prevention, Atlanta, GA 30333, USA., Strockbine N; Centers for Disease Control and Prevention, Atlanta, GA 30333, USA., Ceric O; U.S. Food and Drug Administration, Center for Veterinary Medicine, Laurel, MD 20708, USA., Fortenberry GZ; U.S. Department of Agriculture, Food Safety and Inspection Service, Washington, DC 20250, USA., Harris B; U.S. Department of Agriculture, Animal and Plant Health Inspection Service, Ames, IA 50010, USA., Shaw S; U.S. Department of Agriculture, Food Safety and Inspection Service, Washington, DC 20250, USA., Tillman G; U.S. Department of Agriculture, Food Safety and Inspection Service, Athens, GA 30605, USA., Zhao S; U.S. Food and Drug Administration, Center for Veterinary Medicine, Laurel, MD 20708, USA., Dessai U; U.S. Department of Agriculture, Food Safety and Inspection Service, Washington, DC 20250, USA. |
| Abstrakt: |
Extraintestinal pathogenic Escherichia coli (ExPEC) cause urinary tract and potentially life-threatening invasive infections. Unfortunately, the origins of ExPEC are not always clear. We used genomic data of E. coli isolates from five U.S. government organizations to evaluate potential sources of ExPEC infections. Virulence gene analysis of 38,032 isolates from human, food animal, retail meat, and companion animals classified the subset of 8142 non-diarrheagenic isolates into 40 virulence groups. Groups were identified as low, medium, and high relative risk of containing ExPEC strains, based on the proportion of isolates recovered from humans. Medium and high relative risk groups showed a greater representation of sequence types associated with human disease, including ST-131. Over 90% of food source isolates belonged to low relative risk groups, while >60% of companion animal isolates belonged to medium or high relative risk groups. Additionally, 18 of the 26 most prevalent antimicrobial resistance determinants were more common in high relative risk groups. The associations between antimicrobial resistance and virulence potentially limit treatment options for human ExPEC infections. This study demonstrates the power of large-scale genomics to assess potential sources of ExPEC strains and highlights the importance of a One Health approach to identify and manage these human pathogens. |
