Antibiotic Resistance of Gram-Negative Bacteria in Rivers, United States

Bacteria with intrinsic resistance to antibiotics are found in nature. Such organisms may acquire additional resistance genes from bacteria introduced into soil or water, and the resident bacteria may be the reservoir or source of widespread resistant organisms found in many environments. We isolate...

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Main Authors: Ronald J. Ash, Brena Mauck, Melissa Morgan
Format: Article
Language:English
Published: Centers for Disease Control and Prevention 2002-07-01
Series:Emerging Infectious Diseases
Subjects:
Online Access:https://wwwnc.cdc.gov/eid/article/8/7/01-0264_article
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author Ronald J. Ash
Brena Mauck
Melissa Morgan
author_facet Ronald J. Ash
Brena Mauck
Melissa Morgan
author_sort Ronald J. Ash
collection DOAJ
description Bacteria with intrinsic resistance to antibiotics are found in nature. Such organisms may acquire additional resistance genes from bacteria introduced into soil or water, and the resident bacteria may be the reservoir or source of widespread resistant organisms found in many environments. We isolated antibiotic-resistant bacteria in freshwater samples from 16 U.S. rivers at 22 sites and measured the prevalence of organisms resistant to β-lactam and non β-lactam antibiotics. Over 40% of the bacteria resistant to more than one antibiotic had at least one plasmid. Ampicillin resistance genes, as well as other resistance traits, were identified in 70% of the plasmids. The most common resistant organisms belonged to the following genera: Acinetobacter, Alcaligenes, Citrobacter, Enterobacter, Pseudomonas, and Serratia.
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spelling doaj.art-d5f452e07e1e43f18541140e8ca1853d2022-12-21T19:28:04ZengCenters for Disease Control and PreventionEmerging Infectious Diseases1080-60401080-60592002-07-018771371610.3201/eid0807.010264Antibiotic Resistance of Gram-Negative Bacteria in Rivers, United StatesRonald J. AshBrena MauckMelissa MorganBacteria with intrinsic resistance to antibiotics are found in nature. Such organisms may acquire additional resistance genes from bacteria introduced into soil or water, and the resident bacteria may be the reservoir or source of widespread resistant organisms found in many environments. We isolated antibiotic-resistant bacteria in freshwater samples from 16 U.S. rivers at 22 sites and measured the prevalence of organisms resistant to β-lactam and non β-lactam antibiotics. Over 40% of the bacteria resistant to more than one antibiotic had at least one plasmid. Ampicillin resistance genes, as well as other resistance traits, were identified in 70% of the plasmids. The most common resistant organisms belonged to the following genera: Acinetobacter, Alcaligenes, Citrobacter, Enterobacter, Pseudomonas, and Serratia.https://wwwnc.cdc.gov/eid/article/8/7/01-0264_articleantibiotic resistanceantibioticsbeta-lactam resistancefreshwaterUnited States
spellingShingle Ronald J. Ash
Brena Mauck
Melissa Morgan
Antibiotic Resistance of Gram-Negative Bacteria in Rivers, United States
Emerging Infectious Diseases
antibiotic resistance
antibiotics
beta-lactam resistance
freshwater
United States
title Antibiotic Resistance of Gram-Negative Bacteria in Rivers, United States
title_full Antibiotic Resistance of Gram-Negative Bacteria in Rivers, United States
title_fullStr Antibiotic Resistance of Gram-Negative Bacteria in Rivers, United States
title_full_unstemmed Antibiotic Resistance of Gram-Negative Bacteria in Rivers, United States
title_short Antibiotic Resistance of Gram-Negative Bacteria in Rivers, United States
title_sort antibiotic resistance of gram negative bacteria in rivers united states
topic antibiotic resistance
antibiotics
beta-lactam resistance
freshwater
United States
url https://wwwnc.cdc.gov/eid/article/8/7/01-0264_article
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AT brenamauck antibioticresistanceofgramnegativebacteriainriversunitedstates
AT melissamorgan antibioticresistanceofgramnegativebacteriainriversunitedstates