A survey of antimicrobial resistance in Enterobacteriaceae isolated from the Chesapeake Bay and adjacent upper tributaries. Issue 9 (4th April 2019)

• Record Type: Journal Article
• Authors: Riedel, Stefan; Boire, Nicholas; Carson, Kathryn A.; Vadlamudi, Aravinda; Khuvis, Joshua; Vadlamudi, Vivek; Atukorale, Vajini; Riedel, Victoria A. A.; Parrish, Nicole M.
• Is Part Of: MicrobiologyOpen. Volume 8:Issue 9(2019)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2019-04-04
• Subjects: antibiotic pollution -- antimicrobial resistance -- Chesapeake Bay -- Enterobacteriaceae -- One Health; Microbiology -- Periodicals; 579
• DOI: 10.1002/mbo3.839
• Languages: English
• ISSNs: 2045-8827

Abstract

Abstract: In recent years, the rise in antimicrobial resistance (AR) in the healthcare setting as well as the environment has been recognized as a growing public health problem. The Chesapeake Bay (CB) and its upper tributaries (UT) is a large and biologically diverse estuary. This pilot study evaluated the presence of AR of gram‐negative bacteria isolated from water samples collected at various sites of the Chesapeake Bay. Bacterial organisms were identified and antimicrobial susceptibility testing was performed by phenotypic and genotypic methods. Ninety‐two distinctly different gram‐negative bacteria were identified; Klebsiella pneumoniae, Enterobacter cloacae, Enterobacter aerogenes, Serratia marcescens, and Escherichia coli were most often isolated. Serratia marcescens was more frequently isolated in samples from the UT compared to the CB. Antimicrobial resistance was more frequently detected in organisms from the CB by phenotypic and genotypic methods. Antimicrobial resistance to ampicillin, imipenem, tetracycline, and chloramphenicol were the most frequently observed resistance patterns. ACT‐1, CMY, and SHV genes were the most frequently detected resistance genes, with predominance in organism isolated from the CB. The results from this study emphasize the importance for further developing comprehensive surveillance programs of AR in bacterial isolates in the various environments, such as recreational and other water systems. Abstract : Antimicrobial resistance (AR) in bacteria isolated from various aquatic systems is a growing concern for environmental and public health. This pilot study evaluated the presence of AR of gram‐negative bacteria isolated from water samples collected at various sites of the Chesapeake Bay and its upper tributaries. Antimicrobial resistance was identified to varying degrees in bacterial isolates from these sampling sites; the results from this study emphasize the importance for further developing comprehensive surveillance programs of AR in various environments, such as recreational and other water systems.