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Kadykalo S, Thomas J, Parmley EJ, Pintar K, Fleury M. Antimicrobial resistance of Salmonella and generic Escherichia coli isolated from surface water samples used for recreation and a source of drinking water in southwestern Ontario, Canada. Zoonoses Public Health 2020; 67:566-575. [PMID: 32511870 DOI: 10.1111/zph.12720] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Revised: 02/17/2020] [Accepted: 04/16/2020] [Indexed: 11/29/2022]
Abstract
Antimicrobial resistance (AMR) in the aquatic environment represents an important means of introduction and dissemination of resistance genes, and presence of resistant pathogens in surface waters may pose a public health concern to recreational and drinking water users. The purpose of this study was to explore antimicrobial resistance patterns in water samples collected from the Grand River watershed (southwestern Ontario, Canada) to describe the composition, trends and potential risks of AMR in the aquatic environment. As part of FoodNet Canada and the Canadian Integrated Program for Antimicrobial Resistance Surveillance (CIPARS), stream water samples were collected bi-weekly from sampling sites within the Grand River watershed in the Waterloo, Ontario sentinel site and tested for the presence and antimicrobial susceptibility of Salmonella spp. (2005-2013) and generic Escherichia coli (2012-2013). Of all samples tested, 16% of Salmonella and 22% of E. coli isolates were resistant to at least one antimicrobial, including three Salmonella isolates and two E. coli isolates that were resistant to Category I antimicrobials, which are classified as very high importance for the treatment of serious bacterial infections in humans. The greatest proportion of resistant E. coli isolates were observed from the river site upstream of the drinking water intake, while the greatest proportion of resistant Salmonella isolates were from sites upstream in the watershed, and at one recreational water site. Salmonella resistance trends remained fairly stable between 2007 and 2013, with the exception of streptomycin and tetracycline which increased in 2010 and 2013. Continued surveillance of antimicrobial resistance patterns and exploration of risk factor data will allow for a better understanding of resistance transmission in the aquatic environment.
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Affiliation(s)
- Stefanie Kadykalo
- Centre for Food-Borne, Environmental and Zoonotic Infectious Diseases, Public Health Agency of Canada, Guelph, ON, Canada
| | - Janis Thomas
- Ontario Ministry of the Environment, Conservation and Parks, Toronto, ON, Canada
| | - E Jane Parmley
- Centre for Food-Borne, Environmental and Zoonotic Infectious Diseases, Public Health Agency of Canada, Guelph, ON, Canada.,Department of Population Medicine, University of Guelph, Guelph, Canada
| | | | - Manon Fleury
- Centre for Food-Borne, Environmental and Zoonotic Infectious Diseases, Public Health Agency of Canada, Guelph, ON, Canada
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Carney RL, Labbate M, Siboni N, Tagg KA, Mitrovic SM, Seymour JR. Urban beaches are environmental hotspots for antibiotic resistance following rainfall. WATER RESEARCH 2019; 167:115081. [PMID: 31574348 DOI: 10.1016/j.watres.2019.115081] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Revised: 09/09/2019] [Accepted: 09/10/2019] [Indexed: 06/10/2023]
Abstract
To reveal the occurrence and mechanisms for dispersal of antibiotic resistance (AbR) among the microbial assemblages inhabiting impacted coastal environments, we performed a weekly, two-year duration time-series study at two urban beaches between 2014 and 2016. We combined quantitative PCR and multiplex PCR/reverse line blot techniques to track patterns in the occurrence of 31 AbR genes, including genes that confer resistance to antibiotics that are critically important antimicrobials for human medicine. Patterns in the abundance of these genes were linked to specific microbial groups and environmental parameters by coupling qPCR and 16S rRNA amplicon sequencing data with network analysis. Up to 100-fold increases in the abundance of several AbR genes, including genes conferring resistance to quinolones, trimethoprim, sulfonamides, tetracycline, vancomycin and carbapenems, occurred following storm-water and modelled wet-weather sewer overflow events. The abundance of AbR genes strongly and significantly correlated with several potentially pathogenic bacterial OTUs regularly associated with wastewater infrastructure, such as Arcobacter, Acinetobacter, Aeromonas and Cloacibacterium. These high-resolution observations provide clear links between storm-water discharge and sewer overflow events and the occurrence of AbR in the coastal microbial assemblages inhabiting urban beaches, highlighting a direct mechanism for potentially significant AbR exposure risks to humans.
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Affiliation(s)
- Richard L Carney
- Climate Change Cluster, University of Technology Sydney, Australia
| | - Maurizio Labbate
- School of Life Sciences, University of Technology Sydney, Australia
| | - Nachshon Siboni
- Climate Change Cluster, University of Technology Sydney, Australia
| | - Kaitlin A Tagg
- Westmead Institute for Medical Research, University of Sydney, NSW, Australia; IHRC, Inc., Atlanta, GA, USA
| | - Simon M Mitrovic
- School of Life Sciences, University of Technology Sydney, Australia
| | - Justin R Seymour
- Climate Change Cluster, University of Technology Sydney, Australia.
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Taggar G, Rehman MA, Yin X, Lepp D, Ziebell K, Handyside P, Boerlin P, Diarra MS. Antimicrobial-Resistant E. coli from Surface Waters in Southwest Ontario Dairy Farms. JOURNAL OF ENVIRONMENTAL QUALITY 2018; 47:1068-1078. [PMID: 30272802 DOI: 10.2134/jeq2018.04.0139] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Untreated surface waters can be contaminated with a variety of bacteria, including , some of which can be pathogenic for both humans and animals. Therefore, such waters need to be treated before their use in dairy operations to mitigate risks to dairy cow health and milk safety. To understand the molecular ecology of , this study aimed to assess antimicrobial resistance (AMR) in recovered from untreated surface water sources of dairy farms. Untreated surface water samples ( = 240) from 15 dairy farms were collected and processed to isolate . A total of 234 isolates were obtained and further characterized for their serotypes and antimicrobial susceptibility. Of the 234 isolates, 71.4% were pan-susceptible, 23.5% were resistant to one or two antimicrobial classes, and 5.1% were resistant to three or more antimicrobial classes. Whole genome sequence analysis of 11 selected multidrug-resistant isolates revealed AMR genes including and that confer resistance to the critically important extended-spectrum cephalosporins, as well as a variety of plasmids (mainly of the replicon type) and class 1 integrons. Phylogenetic and comparative genome analysis revealed a genetic relationship between some of the sequenced and Shiga toxin-producing O157:H7 (STEC), which warrants further investigation. This study shows that untreated surface water sources contain antimicrobial-resistant which may serve as a reservoir of AMR that could be disseminated through horizontal gene transfer. This is another reason why effective water treatment before usage should be routinely done on dairy farm operations.
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Yusa A, Berry P, J Cheng J, Ogden N, Bonsal B, Stewart R, Waldick R. Climate Change, Drought and Human Health in Canada. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2015; 12:8359-412. [PMID: 26193300 PMCID: PMC4515727 DOI: 10.3390/ijerph120708359] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/02/2015] [Revised: 07/03/2015] [Accepted: 07/08/2015] [Indexed: 11/17/2022]
Abstract
Droughts have been recorded all across Canada and have had significant impacts on individuals and communities. With climate change, projections suggest an increasing risk of drought in Canada, particularly in the south and interior. However, there has been little research on the impacts of drought on human health and the implications of a changing climate. A review of the Canadian, U.S. and international literature relevant to the Canadian context was conducted to better define these impacts and adaptations available to protect health. Drought can impact respiratory health, mental health, illnesses related to exposure to toxins, food/water security, rates of injury and infectious diseases (including food-, water- and vector-borne diseases). A range of direct and indirect adaptation (e.g., agricultural adaptation) options exist to cope with drought. Many have already been employed by public health officials, such as communicable disease monitoring and surveillance and public education and outreach. However, gaps exist in our understanding of the impacts of short-term vs. prolonged drought on the health of Canadians, projections of drought and its characteristics at the regional level and the effectiveness of current adaptations. Further research will be critical to inform adaptation planning to reduce future drought-related risks to health.
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Affiliation(s)
- Anna Yusa
- Environmental Health Program, Health Canada, 180 Queen St. West, Toronto, ON M5V 3L7, Canada.
| | - Peter Berry
- Climate Change and Health Office, Health Canada, 269 Laurier Ave. West, Ottawa, ON K1A 0K9, Canada.
| | - June J Cheng
- Sherbourne Health Centre, 333 Sherbourne St., Toronto, ON M5A 2S5, Canada.
| | - Nicholas Ogden
- Centre for Food-Borne, Environmental and Zoonotic Infectious Diseases, Public Health Agency of Canada, 3200 Sicotte, P.O. Box 5000, Saint-Hyacinthe, QC J2S 7C6, Canada.
| | - Barrie Bonsal
- Watershed Hydrology and Ecology Research Division, Environment Canada, 11 Innovation Blvd., Saskatoon, Saskatchewan S7N 3H5, Canada.
| | - Ronald Stewart
- Department of Environment and Geography, University of Manitoba, 70A Dysart Road, Winnipeg, MB R3T 2N2, Canada.
| | - Ruth Waldick
- Environmental Health, Agriculture and Agri-Food Canada, 960 Carling Avenue, Ottawa, ON K1A 0Z2, Canada.
- Department of Geography and Environmental Studies, Carleton University, 1125 Colonel By Drive, Ottawa, ON K1S 5B6, Canada.
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Samanta I, Joardar SN, Das PK, Das P, Sar TK, Dutta TK, Bandyopadhyay S, Batabyal S, Isore DP. Virulence Repertoire, Characterization, and Antibiotic Resistance Pattern Analysis ofEscherichia coliIsolated from Backyard Layers and Their Environment in India. Avian Dis 2014; 58:39-45. [DOI: 10.1637/10586-052913-reg.1] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Coleman BL, Louie M, Salvadori MI, McEwen SA, Neumann N, Sibley K, Irwin RJ, Jamieson FB, Daignault D, Majury A, Braithwaite S, Crago B, McGeer AJ. Contamination of Canadian private drinking water sources with antimicrobial resistant Escherichia coli. WATER RESEARCH 2013; 47:3026-3036. [PMID: 23548566 DOI: 10.1016/j.watres.2013.03.008] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2012] [Revised: 02/22/2013] [Accepted: 03/04/2013] [Indexed: 06/02/2023]
Abstract
BACKGROUND Surface and ground water across the world, including North America, is contaminated with bacteria resistant to antibiotics. The consumption of water contaminated with antimicrobial resistant Escherichia coli (E. coli) has been associated with the carriage of resistant E. coli in people who drink it. OBJECTIVES To describe the proportion of drinking water samples submitted from private sources for bacteriological testing that were contaminated with E. coli resistant to antibiotics and to determine risk factors for the contamination of these water sources with resistant and multi-class resistant E. coli. METHODS Water samples submitted for bacteriological testing in Ontario and Alberta Canada were tested for E. coli contamination, with a portion of the positive isolates tested for antimicrobial resistance. Households were invited to complete questionnaires to determine putative risk factors for well contamination. RESULTS Using multinomial logistic regression, the risk of contamination with E. coli resistant to one or two classes of antibiotics compared to susceptible E. coli was higher for shore wells than drilled wells (odds ratio [OR] 2.8) and higher for farms housing chickens or turkeys (OR 3.0) than properties without poultry. The risk of contamination with multi-class resistant E. coli (3 or more classes) was higher if the properties housed swine (OR 5.5) or cattle (OR 2.2) than properties without these livestock and higher if the wells were located in gravel (OR 2.4) or clay (OR 2.1) than in loam. CONCLUSIONS Housing livestock on the property, using a shore well, and having a well located in gravel or clay soil increases the risk of having antimicrobial resistant E. coli in E. coli contaminated wells. To reduce the incidence of water borne disease and the transmission of antimicrobial resistant bacteria, owners of private wells need to take measures to prevent contamination of their drinking water, routinely test their wells for contamination, and use treatments that eliminate bacteria.
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