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Keenum I, Calarco J, Majeed H, Hager-Soto EE, Bott C, Garner E, Harwood VJ, Pruden A. To what extent do water reuse treatments reduce antibiotic resistance indicators? A comparison of two full-scale systems. WATER RESEARCH 2024; 254:121425. [PMID: 38492480 DOI: 10.1016/j.watres.2024.121425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Revised: 03/03/2024] [Accepted: 03/04/2024] [Indexed: 03/18/2024]
Abstract
Water reuse is an essential strategy for reducing water demand from conventional sources, alleviating water stress, and promoting sustainability, but understanding the effectiveness of associated treatment processes as barriers to the spread of antibiotic resistance is an important consideration to protecting human health. We comprehensively evaluated the reduction of antibiotic resistance genes (ARGs) and antibiotic-resistant bacteria (ARB) in two field-operational water reuse systems with distinct treatment trains, one producing water for indirect potable reuse (ozone/biologically-active carbon/granular activated carbon) and the other for non-potable reuse (denitrification-filtration/chlorination) using metagenomic sequencing and culture. Relative abundances of total ARGs/clinically-relevant ARGs and cultured ARB were reduced by several logs during primary and secondary stages of wastewater treatment, but to a lesser extent during the tertiary water reuse treatments. In particular, ozonation tended to enrich multi-drug ARGs. The effect of chlorination was facility-dependent, increasing the relative abundance of ARGs when following biologically-active carbon filters, but generally providing a benefit in reduced bacterial numbers and ecological and human health resistome risk scores. Relative abundances of total ARGs and resistome risk scores were lowest in aquifer samples, although resistant Escherichia coli and Klebsiella pneumoniae were occasionally detected in the monitoring well 3-days downgradient from injection, but not 6-months downgradient. Resistant E. coli and Pseudomonas aeruginosa were occasionally detected in the nonpotable reuse distribution system, along with increased levels of multidrug, sulfonamide, phenicol, and aminoglycoside ARGs. This study illuminates specific vulnerabilities of water reuse systems to persistence, selection, and growth of ARGs and ARB and emphasizes the role of multiple treatment barriers, including aquifers and distribution systems.
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Affiliation(s)
- Ishi Keenum
- Via Department of Civil and Environmental Engineering, Virginia Tech, Blacksburg, VA, USA; Present address: Department of Civil, Environmental, and Geospatial Engineering, Michigan Tech, Houghton, MI, USA
| | - Jeanette Calarco
- Department of Integrative Biology, University of South Florida, Tampa, FL, USA
| | - Haniyyah Majeed
- Via Department of Civil and Environmental Engineering, Virginia Tech, Blacksburg, VA, USA
| | - E Eldridge Hager-Soto
- Via Department of Civil and Environmental Engineering, Virginia Tech, Blacksburg, VA, USA
| | - Charles Bott
- Hampton Roads Sanitation District, Virginia Beach, VA, USA
| | - Emily Garner
- Wadsworth Department of Civil and Environmental Engineering, West Virginia University, Morgantown, WV, USA
| | - Valerie J Harwood
- Department of Integrative Biology, University of South Florida, Tampa, FL, USA
| | - Amy Pruden
- Via Department of Civil and Environmental Engineering, Virginia Tech, Blacksburg, VA, USA.
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2
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Adelodun B, Kumar P, Odey G, Ajibade FO, Ibrahim RG, Alamri SAM, Alrumman SA, Eid EM, Kumar V, Adeyemi KA, Arya AK, Bachheti A, Oliveira MLS, Choi KS. A safe haven of SARS-CoV-2 in the environment: Prevalence and potential transmission risks in the effluent, sludge, and biosolids. GEOSCIENCE FRONTIERS 2022; 13:101373. [PMID: 37521134 PMCID: PMC8861126 DOI: 10.1016/j.gsf.2022.101373] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2021] [Revised: 01/04/2022] [Accepted: 02/17/2022] [Indexed: 05/11/2023]
Abstract
The novel coronavirus, SARS-CoV-2, which has caused millions of death globally is recognized to be unstable and recalcitrant in the environment, especially in the way it has been evolving to form new and highly transmissible variants. Of particular concerns are human-environment interactions and the handling and reusing the environmental materials, such as effluents, sludge, or biosolids laden with the SARS-CoV-2 without adequate treatments, thereby suggesting potential transmission and health risks. This study assesses the prevalence of SARS-CoV-2 RNA in effluents, sludge, and biosolids. Further, we evaluate the environmental, ecological, and health risks of reusing these environmental materials by wastewater/sludge workers and farmers. A systematic review of literature from the Scopus database resulted in a total of 21 articles (11 for effluents, 8 for sludge, and 2 for biosolids) that met the criteria for meta-analysis, which are then subdivided into 30 meta-analyzed studies. The prevalence of SAR-CoV-2 RNA in effluent and sludge based on random-effect models are 27.51 and 1012.25, respectively, with a 95% CI between 6.14 and 48.89 for the effluent, and 104.78 and 1019.71 for the sludge. However, the prevalence of SARS-CoV-2 RNA in the biosolids based on the fixed-effect model is 30.59, with a 95% CI between 10.10 and 51.08. The prevalence of SARS-CoV-2 RNA in environmental materials indicates the inefficiency in some of the treatment systems currently deployed to inactivate and remove the novel virus, which could be a potential health risk concern to vulnerable wastewater workers in particular, and the environmental and ecological issues for the population at large. This timely review portends the associated risks in handling and reusing environmental materials without proper and adequate treatments.
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Affiliation(s)
- Bashir Adelodun
- Department of Agricultural Civil Engineering, Kyungpook National University, Daegu 41566, South Korea
- Department of Agricultural and Biosystems Engineering, University of Ilorin, PMB 1515, Ilorin 240003, Nigeria
| | - Pankaj Kumar
- Agro-ecology and Pollution Research Laboratory, Department of Zoology and Environmental Science, Gurukula Kangri (Deemed to be University), Haridwar 249404, Uttarakhand, India
| | - Golden Odey
- Department of Agricultural Civil Engineering, Kyungpook National University, Daegu 41566, South Korea
| | - Fidelis Odedishemi Ajibade
- Department of Civil and Environmental Engineering, Federal University of Technology, PMB 704, Akure, Nigeria
- Key Laboratory of Environmental Biotechnology, Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, PR China
- University of Chinese Academy of Sciences, Beijing 100049, PR China
| | | | - Saad A M Alamri
- Biology Department, College of Science, King Khalid University, Abha 61321, Saudi Arabia
| | - Sulaiman A Alrumman
- Biology Department, College of Science, King Khalid University, Abha 61321, Saudi Arabia
| | - Ebrahem M Eid
- Biology Department, College of Science, King Khalid University, Abha 61321, Saudi Arabia
- Botany Department, Faculty of Science, Kafrelsheikh University, Kafr El-Sheikh 33516, Egypt
| | - Vinod Kumar
- Agro-ecology and Pollution Research Laboratory, Department of Zoology and Environmental Science, Gurukula Kangri (Deemed to be University), Haridwar 249404, Uttarakhand, India
| | - Khalid Adeola Adeyemi
- Department of Agricultural Civil Engineering, Kyungpook National University, Daegu 41566, South Korea
| | - Ashish Kumar Arya
- Department of Environmental Science, Graphic Era (Deemed to be University) Deharadun, 248002 Uttarakhand, India
| | - Archana Bachheti
- Department of Environmental Science, Graphic Era (Deemed to be University) Deharadun, 248002 Uttarakhand, India
| | - Marcos L S Oliveira
- Department of Civil and Environmental, Universidad De La Costa, Calle 58 #55-66, 080002 Barranquilla, Atlántico, Colombia
| | - Kyung Sook Choi
- Department of Agricultural Civil Engineering, Kyungpook National University, Daegu 41566, South Korea
- Institute of Agricultural Science & Technology, Kyungpook, National University, Daegu 41566, South Korea
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3
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Zhang Z, Wang Y, Chen B, Lei C, Yu Y, Xu N, Zhang Q, Wang T, Gao W, Lu T, Gillings M, Qian H. Xenobiotic pollution affects transcription of antibiotic resistance and virulence factors in aquatic microcosms. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 306:119396. [PMID: 35525510 DOI: 10.1016/j.envpol.2022.119396] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 04/08/2022] [Accepted: 04/30/2022] [Indexed: 06/14/2023]
Abstract
Antibiotic resistance genes (ARGs) and virulence factors (VFs) are critical threats to human health. Their abundance in aquatic ecosystems is maintained and enhanced via selection driven by environmental xenobiotics. However, their activity and expression in these environments under xenobiotic stress remains unknown. Here ARG and VF expression profiles were examined in aquatic microcosms under ciprofloxacin, glyphosate and sertraline hydrochloride treatment. Ciprofloxacin increased total expression of ARGs, particularly multidrug resistance genes. Total expression of ARGs and VFs decreased significantly under glyphosate and sertraline treatments. However, in opportunistic human pathogens, these agents increased expression of both ARGs and VFs. Xenobiotic pollutants, such as the compounds we tested here, have the potential to disrupt microbial ecology, promote resistance, and increase risk to human health. This study systematically evaluated the effects of environmental xenobiotics on transcription of ARGs and VFs, both of which have direct relevance to human health. Transcription of such genes has been overlooked in previous studies.
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Affiliation(s)
- Zhenyan Zhang
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, PR China
| | - Yan Wang
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, PR China
| | - Bingfeng Chen
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, PR China
| | - Chaotang Lei
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, PR China
| | - Yitian Yu
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, PR China
| | - Nuohan Xu
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, PR China
| | - Qi Zhang
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, PR China
| | - Tingzhang Wang
- Key Laboratory of Microbial Technology and Bioinformatics of Zhejiang Province, Hangzhou, 310012, PR China
| | - Wenwen Gao
- Key Laboratory of Microbial Technology and Bioinformatics of Zhejiang Province, Hangzhou, 310012, PR China
| | - Tao Lu
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, PR China
| | - Michael Gillings
- ARC Centre of Excellence in Synthetic Biology, Faculty of Science and Engineering, Macquarie University, NSW, 2109, Australia
| | - Haifeng Qian
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, PR China.
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4
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Godijk NG, Bootsma MCJ, Bonten MJM. Transmission routes of antibiotic resistant bacteria: a systematic review. BMC Infect Dis 2022; 22:482. [PMID: 35596134 PMCID: PMC9123679 DOI: 10.1186/s12879-022-07360-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Accepted: 03/28/2022] [Indexed: 11/16/2022] Open
Abstract
Background Quantification of acquisition routes of antibiotic resistant bacteria (ARB) is pivotal for understanding transmission dynamics and designing cost-effective interventions. Different methods have been used to quantify the importance of transmission routes, such as relative risks, odds ratios (OR), genomic comparisons and basic reproduction numbers. We systematically reviewed reported estimates on acquisition routes’ contributions of ARB in humans, animals, water and the environment and assessed the methods used to quantify the importance of transmission routes. Methods PubMed and EMBASE were searched, resulting in 6054 articles published up until January 1st, 2019. Full text screening was performed on 525 articles and 277 are included. Results We extracted 718 estimates with S. aureus (n = 273), E. coli (n = 157) and Enterobacteriaceae (n = 99) being studied most frequently. Most estimates were derived from statistical methods (n = 560), mainly expressed as risks (n = 246) and ORs (n = 239), followed by genetic comparisons (n = 85), modelling (n = 62) and dosage of ARB ingested (n = 17). Transmission routes analysed most frequently were occupational exposure (n = 157), travelling (n = 110) and contacts with carriers (n = 83). Studies were mostly performed in the United States (n = 142), the Netherlands (n = 87) and Germany (n = 60). Comparison of methods was not possible as studies using different methods to estimate the same route were lacking. Due to study heterogeneity not all estimates by the same method could be pooled. Conclusion Despite an abundance of published data the relative importance of transmission routes of ARB has not been accurately quantified. Links between exposure and acquisition are often present, but the frequency of exposure is missing, which disables estimation of transmission routes’ importance. To create effective policies reducing ARB, estimates of transmission should be weighed by the frequency of exposure occurrence. Supplementary Information The online version contains supplementary material available at 10.1186/s12879-022-07360-z.
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Affiliation(s)
- Noortje G Godijk
- Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands.
| | - Martin C J Bootsma
- Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands.,Department of Mathematics, Faculty of Sciences, Utrecht University, Utrecht, The Netherlands
| | - Marc J M Bonten
- Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
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5
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Gwenzi W, Shamsizadeh Z, Gholipour S, Nikaeen M. The air-borne antibiotic resistome: Occurrence, health risks, and future directions. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 804:150154. [PMID: 34798728 DOI: 10.1016/j.scitotenv.2021.150154] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 08/27/2021] [Accepted: 09/01/2021] [Indexed: 06/13/2023]
Abstract
Antibiotic resistance comprising of antibiotic resistant bacteria (ARB) and antibiotic resistance genes (ARGs) is an emerging problem causing global human health risks. Several reviews exist on antibiotic resistance in various environmental compartments excluding the air-borne resistome. An increasing body of recent evidence exists on the air-borne resistome comprising of antibiotic resistance in air-borne bioaerosols from various environmental compartments. However, a comprehensive review on the sources, dissemination, behavior, fate, and human exposure and health risks of the air-borne resistome is still lacking. Therefore, the current review uses the source-pathway-receptor-impact-mitigation framework to investigate the air-borne resistome. The nature and sources of antibiotic resistance in the air-borne resistome are discussed. The dissemination pathways, and environmental and anthropogenic drivers accounting for the transfer of antibiotic resistance from sources to the receptors are highlighted. The human exposure and health risks posed by air-borne resistome are presented. A health risk assessment and mitigation strategy is discussed. Finally, future research directions including key knowledge gaps are summarized.
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Affiliation(s)
- Willis Gwenzi
- Biosystems and Environmental Engineering Research Group, Department of Agricultural and Biosystems Engineering, Faculty of Agriculture, University of Zimbabwe, P.O. Box MP 167, Mount Pleasant, Harare, Zimbabwe.
| | - Zahra Shamsizadeh
- Department of Environmental Health Engineering, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran; Department of Environmental Health Engineering, Environmental Science and Technology Research Center, School of Public Health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Sahar Gholipour
- Department of Environmental Health Engineering, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran; Department of Environmental Health Engineering, Faculty of Health, Kashan University of Medical Sciences, Kashan, Iran
| | - Mahnaz Nikaeen
- Department of Environmental Health Engineering, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran
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6
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Schoen ME, Jahne MA, Garland J, Ramirez L, Lopatkin AJ, Hamilton KA. Quantitative Microbial Risk Assessment of Antimicrobial Resistant and Susceptible Staphylococcus aureus in Reclaimed Wastewaters. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2021; 55:15246-15255. [PMID: 34699171 PMCID: PMC8721656 DOI: 10.1021/acs.est.1c04038] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The annual risks of colonization, skin infection, bloodstream infection (BSI), and disease burden from exposures to antibiotic-resistant and susceptible Staphylococcus aureus (S. aureus) were estimated using quantitative microbial risk assessment (QMRA). We estimated the probability of nasal colonization after immersion in wastewater (WW) or greywater (GW) treated across a range of treatment alternatives and subsequent infection. Horizontal gene transfer was incorporated into the treatment model but had little effect on the predicted risk. The cumulative annual probability of infection (resulting from self-inoculation) was most sensitive to the treatment log10 reduction value (LRV), S. aureus concentration, and the newly calculated morbidity ratios and was below the health benchmark of 10-4 infections per person per year (ppy) given a treatment LRV of roughly 3.0. The predicted annual disability-adjusted life years (DALYs), which were dominated by BSI, were below the health benchmark of 10-6 DALYs ppy for resistant and susceptible S. aureus, given LRVs of 4.5 and 3.5, respectively. Thus, the estimated infection risks and disease burdens resulting from nasal colonization are below the relevant health benchmarks for risk-based, nonpotable, or potable reuse systems but possibly above for immersion in minimally treated GW or WW. Strain-specific data to characterize dose-response and concentration in WW are needed to substantiate the QMRA.
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Affiliation(s)
- Mary E Schoen
- Soller Environmental, LLC, 3022 King Street, Berkeley, California 94703, United States
| | - Michael A Jahne
- U.S. Environmental Protection Agency, Office of Research and Development, 26 W. Martin Luther King Drive, Cincinnati, Ohio 45268, United States
| | - Jay Garland
- U.S. Environmental Protection Agency, Office of Research and Development, 26 W. Martin Luther King Drive, Cincinnati, Ohio 45268, United States
| | - Lucia Ramirez
- School of Mathematical and Statistical Sciences, Arizona State University, Tempe, Arizona 85281, United States
| | - Allison J Lopatkin
- Department of Biology, Barnard College, New York, New York 10027, United States
- Department Ecology, Evolution, and Environmental Biology, Columbia University, New York, New York 10027, United States
- Data Science Institute, Columbia University, New York, New York 10027, United States
- Department of Systems Biology, Columbia University, New York, New York 10027, United States
| | - Kerry A Hamilton
- School of Sustainable Engineering and the Built Environment, 660 S College Avenue, Tempe Arizona 85281, United States
- The Biodesign Center for Environmental Health Engineering, 1001 S McAllister Avenue, Tempe Arizona 85287, United States
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7
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Isolation and Characterization of Bacteriophage Against Wastewater Isolates of Methicillin-resistant Staphylococcus aureus. Jundishapur J Microbiol 2021. [DOI: 10.5812/jjm.119291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Background: Methicillin-resistant Staphylococcus aureus (MRSA) not only is a notorious pathogen in clinical settings but also is an environmental issue that its presence in environmental wastewater is highlighted by several reports. Due to the negative impacts of antibiotics, alternatives like bacteriophages, as biocontrol, are considered safe. However, not all bacteriophages are safe. Thus, the characterization of bacteriophages is necessary. Objectives: This study aimed to, firstly isolate MRSA from wastewater and, secondly to perform bacteriophage isolation from the water samples to investigate its physical and genomic characteristics. Methods: Water samples were collected from seven locations across Nagpur city, India, bacteria were isolated on the S. aureus specific agar. For detecting MRSA, we followed the disc diffusion method. Isolation of bacteriophage against MRSA was performed by a modified enrichment method. We investigated its physical characteristics by the one-step growth rate, adsorption rate, host range, survivability, electron microscopy, and genomic sequencing for bioinformatics analysis. Results: Four MRSA were isolated from wastewater samples. We got a bacteriophage against an MRSA from the river Ganga. The bacteriophage belongs to the Podoviridae family, subfamily Autographivirinae. It was stable till 40°C and could survive at a highly alkaline pH. It is specific to its host. The bacteriophage DNA encodes 52 ORF, and all predicted genes are on the same strand; it also encodes a phage RNA polymerase. Conclusions: It is the first report of an S. aureus bacteriophage that belongs to the sub-family Autographivirinae. Our study and literature survey conclude that S. aureus bacteriophages of the Podoviridae family are safe for various downstream applications.
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8
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Garner E, Organiscak M, Dieter L, Shingleton C, Haddix M, Joshi S, Pruden A, Ashbolt NJ, Medema G, Hamilton KA. Towards risk assessment for antibiotic resistant pathogens in recycled water: a systematic review and summary of research needs. Environ Microbiol 2021; 23:7355-7372. [PMID: 34632683 DOI: 10.1111/1462-2920.15804] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 09/30/2021] [Accepted: 10/04/2021] [Indexed: 11/26/2022]
Abstract
Risk assessment is critical for identifying target concentrations of antibiotic resistant pathogens necessary for mitigating potential harmful exposures associated with water reuse. However, there is currently limited available data characterizing the concentrations of antibiotic resistant bacteria (ARB) and antibiotic resistance genes (ARGs) in recycled water to support robust efforts at risk assessment. The objective of this systematic review was to identify and synthesize the existing literature documenting the presence and abundance of ARB and ARGs in recycled water. In addition, this review identifies best practices and explores monitoring targets for studying ARB and ARGs in recycled water to guide future work and identifies key research needs aimed at better supporting quantitative microbial risk assessment focused on recycled water and antibiotic resistance. Future efforts to collect data about ARB and ARG prevalence in recycled water should report concentration data per unit volume. Sample metadata should also be provided, including a description of treatment approach, a description of planned water uses (e.g., potable, irrigation), methods for conveyance to the point of use, and available physicochemical water quality data. Additional research is needed aimed at identifying recommended ARB and ARG monitoring targets and for developing approaches to incorporate metagenomic data into risk assessment.
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Affiliation(s)
- Emily Garner
- Wadsworth Department of Civil and Environmental Engineering, West Virginia University, Morgantown, WV, 26506, USA
| | - Marisa Organiscak
- Wadsworth Department of Civil and Environmental Engineering, West Virginia University, Morgantown, WV, 26506, USA
| | - Lucien Dieter
- School of Sustainable Engineering and the Built Environment, Arizona State University, 660 S College Ave, Tempe, AZ, 85281, USA.,The Biodesign Institute Center for Environmental Health Engineering, Arizona State University, 1001 S McAllister Ave, Tempe, AZ, 85281, USA
| | - Carley Shingleton
- Wadsworth Department of Civil and Environmental Engineering, West Virginia University, Morgantown, WV, 26506, USA
| | - Madison Haddix
- Wadsworth Department of Civil and Environmental Engineering, West Virginia University, Morgantown, WV, 26506, USA
| | - Sayalee Joshi
- School of Sustainable Engineering and the Built Environment, Arizona State University, 660 S College Ave, Tempe, AZ, 85281, USA.,The Biodesign Institute Center for Environmental Health Engineering, Arizona State University, 1001 S McAllister Ave, Tempe, AZ, 85281, USA
| | - Amy Pruden
- Via Department of Civil and Environmental Engineering, Virginia Tech, Blacksburg, VA, 24061, USA
| | - Nicholas J Ashbolt
- Faculty of Science and Engineering, Southern Cross University, Lismore, Australia
| | - Gertjan Medema
- KWR Water Research Institute, 7 3433PE, Nieuwegein, The Netherlands.,Sanitary Engineering, Delft University of Technology, Stevinweg 1 2628 CN Delft, Nieuwegein, The Netherlands
| | - Kerry A Hamilton
- School of Sustainable Engineering and the Built Environment, Arizona State University, 660 S College Ave, Tempe, AZ, 85281, USA.,The Biodesign Institute Center for Environmental Health Engineering, Arizona State University, 1001 S McAllister Ave, Tempe, AZ, 85281, USA
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9
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Contreras JD, Trangucci R, Felix-Arellano EE, Rodríguez-Dozal S, Siebe C, Riojas-Rodríguez H, Meza R, Zelner J, Eisenberg JNS. Modeling Spatial Risk of Diarrheal Disease Associated with Household Proximity to Untreated Wastewater Used for Irrigation in the Mezquital Valley, Mexico. ENVIRONMENTAL HEALTH PERSPECTIVES 2020; 128:77002. [PMID: 32634028 PMCID: PMC7340213 DOI: 10.1289/ehp6443] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Revised: 05/17/2020] [Accepted: 06/10/2020] [Indexed: 05/31/2023]
Abstract
BACKGROUND Reusing wastewater for irrigation is a longstanding practice that enhances crop yields and improves climate resilience. Without treatment, however, wastewater contains harmful pathogens and chemicals. Reuse of untreated wastewater has been shown to be harmful to the health of nearby communities, but the routes of exposure are unknown and do not appear to be occupational. Some routes occur throughout entire communities, such as food contamination. Other routes may be spatially dependent, such as spread by domestic animals or through aerosolization. OBJECTIVES To examine whether those wastewater exposure routes with a spatial dependency affect health, we estimated the risks of diarrheal disease in children under age 5 associated with living near wastewater canals, while adjusting for potential individual- and household-level confounders. METHODS We conducted three surveys over 1 y in the Mezquital Valley, Mexico, to measure diarrhea in children. The distance between each participating household and a wastewater canal was measured using GPS coordinates. The association between proximity and diarrhea was estimated with a multilevel logistic regression model accounting for spatial autocorrelation. RESULTS A total of 564 households completed one to three surveys, resulting in 1,856 survey observations of 646 children. Children living 100m from a canal had 45% lower odds of diarrhea than those living within 10m of a canal, and children living 1000m away had 70% lower odds of diarrhea [100m vs. 10m adjusted odds ratio (OR)=0.55, 95% credible interval (CI): 0.33, 0.91; 1000m vs. 10m adjusted OR=0.30, 95% CI: 0.11, 0.82]. DISCUSSION The estimated decline in diarrheal prevalence with household distance from a canal persisted after controlling for occupational exposure. Identifying the specific routes of exposure that drive this relationship will help identify which interventions, such as upstream treatment, can reduce health risks for entire communities where wastewater exposure occurs. https://doi.org/10.1289/EHP6443.
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Affiliation(s)
- Jesse D Contreras
- Department of Epidemiology, University of Michigan School of Public Health, Ann Arbor, Michigan, USA
| | - Rob Trangucci
- Department of Statistics, University of Michigan, Ann Arbor, Michigan, USA
| | - Eunice E Felix-Arellano
- Dirección de Salud Ambiental, Instituto Nacional de Salud Pública, Cuernavaca, Morelos, México
| | - Sandra Rodríguez-Dozal
- Dirección de Salud Ambiental, Instituto Nacional de Salud Pública, Cuernavaca, Morelos, México
| | - Christina Siebe
- Instituto de Geología, Universidad Nacional Autónoma de México, Ciudad de México, Distrito Federal, México
| | | | - Rafael Meza
- Department of Epidemiology, University of Michigan School of Public Health, Ann Arbor, Michigan, USA
| | - Jon Zelner
- Department of Epidemiology, University of Michigan School of Public Health, Ann Arbor, Michigan, USA
| | - Joseph N S Eisenberg
- Department of Epidemiology, University of Michigan School of Public Health, Ann Arbor, Michigan, USA
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10
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de Araújo JC, de Queiroz Silva S, de Aquino SF, Freitas DL, Machado EC, Pereira AR, de Oliveira Paranhos AG, de Paula Dias C. Antibiotic Resistance, Sanitation, and Public Health. THE HANDBOOK OF ENVIRONMENTAL CHEMISTRY 2020. [DOI: 10.1007/698_2020_470] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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11
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Microbiological Constraints for Use of Reclaimed and Reconditioned Water in Food Production and Processing Operations. Food Microbiol 2019. [DOI: 10.1128/9781555819972.ch41] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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12
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Sapkota AR. Water reuse, food production and public health: Adopting transdisciplinary, systems-based approaches to achieve water and food security in a changing climate. ENVIRONMENTAL RESEARCH 2019; 171:576-580. [PMID: 30477872 DOI: 10.1016/j.envres.2018.11.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Revised: 10/30/2018] [Accepted: 11/02/2018] [Indexed: 06/09/2023]
Abstract
Climate change and population growth are contributing to a growing global freshwater crisis that is exacerbating agricultural water scarcity and compromising food security and public health. In light of these challenges, the increased reliance on nontraditional irrigation water sources, such as reclaimed or recycled water, is emerging as a potentially viable strategy to address water and food insecurity worldwide. This editorial provides an overview of the global need for agricultural water reuse and outlines the environmental and public health impacts associated with this practice. Policy implications, including an emphasis on "One Water" approaches, are discussed. Finally, the editorial leads off a Special Issue that includes a collection of articles reporting on the initial research and extension/outreach findings of CONSERVE: A Center of Excellence at the Nexus of Sustainable Water Reuse, Food and Health, funded by the U.S. Department of Agriculture, National Institute of Food and Agriculture. Taken together, this compilation of articles addresses the overarching theme that transdisciplinary teams are key with regard to moving the science of agricultural water reuse forward to achieve water and food security and advance public health in a changing climate.
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Affiliation(s)
- Amy R Sapkota
- CONSERVE: A Center of Excellence at the Nexus of Sustainable Water Reuse, Food and Health, Maryland Institute for Applied Environmental Health, University of Maryland School of Public Health, School of Public Health Building (255), 4200 Valley Drive, Room 2234P, College Park, MD 20742, United States..
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Aydin S, Aydin ME, Ulvi A, Kilic H. Antibiotics in hospital effluents: occurrence, contribution to urban wastewater, removal in a wastewater treatment plant, and environmental risk assessment. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:544-558. [PMID: 30406596 DOI: 10.1007/s11356-018-3563-0] [Citation(s) in RCA: 112] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Accepted: 10/22/2018] [Indexed: 05/25/2023]
Abstract
The study presented the occurrence of antibiotics in 16 different hospital effluents, the removal of antibiotics in urban wastewater treatment plant (WWTP), and the potential ecotoxicological risks of the effluent discharge on the aquatic ecosystem. The total concentration of antibiotics in hospital effluents was ranged from 21.2 ± 0.13 to 4886 ± 3.80 ng/L in summer and from 497 ± 3.66 to 322,735 ± 4.58 ng/L in winter. Azithromycin, clarithromycin, and ciprofloxacin were detected the highest concentrations among the investigated antibiotics. The total antibiotic load to the influent of the WWTP from hospitals was 3.46 g/day in summer and 303.2 g/day in winter. The total antibiotic contribution of hospitals to the influent of the WWTP was determined as 13% in summer and 28% in winter. The remaining 87% in summer and 72% in winter stems from the households. The total antibiotic removal by conventional physical and biological treatment processes was determined as 79% in summer, whereas it decreased to 36% in winter. When the environmental risk assessment was performed, azithromycin and clarithromycin in the effluent from the treatment plant in winter posed a high risk (RQ > 10) for the aquatic organisms (algae and fish) in the receiving environment. According to these results, the removal efficiency of antibiotics at the WWTP is inadequate and plant should be improved to remove antibiotics by advanced treatment processes.
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Affiliation(s)
- Senar Aydin
- Environmental Engineering Department, Necmettin Erbakan University, Konya, Turkey.
| | - Mehmet Emin Aydin
- Environmental Engineering Department, Necmettin Erbakan University, Konya, Turkey
| | - Arzu Ulvi
- Environmental Engineering Department, Necmettin Erbakan University, Konya, Turkey
| | - Havva Kilic
- Environmental Engineering Department, Necmettin Erbakan University, Konya, Turkey
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Hamilton KA, Hamilton MT, Johnson W, Jjemba P, Bukhari Z, LeChevallier M, Haas CN. Health risks from exposure to Legionella in reclaimed water aerosols: Toilet flushing, spray irrigation, and cooling towers. WATER RESEARCH 2018; 134:261-279. [PMID: 29428779 DOI: 10.1016/j.watres.2017.12.022] [Citation(s) in RCA: 72] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Revised: 11/30/2017] [Accepted: 12/12/2017] [Indexed: 05/05/2023]
Abstract
The use of reclaimed water brings new challenges for the water industry in terms of maintaining water quality while increasing sustainability. Increased attention has been devoted to opportunistic pathogens, especially Legionella pneumophila, due to its growing importance as a portion of the waterborne disease burden in the United States. Infection occurs when a person inhales a mist containing Legionella bacteria. The top three uses for reclaimed water (cooling towers, spray irrigation, and toilet flushing) that generate aerosols were evaluated for Legionella health risks in reclaimed water using quantitative microbial risk assessment (QMRA). Risks are compared using data from nineteen United States reclaimed water utilities measured with culture-based methods, quantitative PCR (qPCR), and ethidium-monoazide-qPCR. Median toilet flushing annual infection risks exceeded 10-4 considering multiple toilet types, while median clinical severity infection risks did not exceed this value. Sprinkler and cooling tower risks varied depending on meteorological conditions and operational characteristics such as drift eliminator performance. However, the greatest differences between risk scenarios were due to 1) the dose response model used (infection or clinical severity infection) 2) population at risk considered (residential or occupational) and 3) differences in laboratory analytical method. Theoretical setback distances necessary to achieve a median annual infection risk level of 10-4 are proposed for spray irrigation and cooling towers. In both cooling tower and sprinkler cases, Legionella infection risks were non-trivial at potentially large setback distances, and indicate other simultaneous management practices could be needed to manage risks. The sensitivity analysis indicated that the most influential factors for variability in risks were the concentration of Legionella and aerosol partitioning and/or efficiency across all models, highlighting the importance of strategies to manage Legionella occurrence in reclaimed water.
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Affiliation(s)
- Kerry A Hamilton
- Drexel University, 3141 Chestnut Street, Philadelphia, PA 19104, USA.
| | | | - William Johnson
- American Water Research Laboratory, 213 Carriage Lane, Delran, New Jersey 08075, USA
| | - Patrick Jjemba
- American Water Research Laboratory, 213 Carriage Lane, Delran, New Jersey 08075, USA
| | - Zia Bukhari
- American Water Research Laboratory, 213 Carriage Lane, Delran, New Jersey 08075, USA
| | - Mark LeChevallier
- American Water Research Laboratory, 213 Carriage Lane, Delran, New Jersey 08075, USA
| | - Charles N Haas
- Drexel University, 3141 Chestnut Street, Philadelphia, PA 19104, USA
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Goldstein RR, Kleinfelter L, He X, Micallef SA, George A, Gibbs SG, Sapkota AR. Higher prevalence of coagulase-negative staphylococci carriage among reclaimed water spray irrigators. THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 595:35-40. [PMID: 28376426 DOI: 10.1016/j.scitotenv.2017.03.174] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Revised: 03/14/2017] [Accepted: 03/19/2017] [Indexed: 06/07/2023]
Abstract
Coagulase negative staphylococci (CoNS) are leading causes of nosocomial infections and community-acquired methicillin-resistant CoNS (MRCoNS) infections are increasing. CoNS have been previously detected in reclaimed water. To date, no studies have evaluated the prevalence of CoNS carriage among humans exposed to reclaimed water in the U.S. We examined the prevalence and odds of CoNS and antibiotic-resistant CoNS carriage in spray irrigators exposed to reclaimed water compared to controls. We collected nasal and dermal swab samples from 19 reclaimed water spray irrigation workers (n=96 total samples) and 24 controls (n=92 total samples). Samples were analyzed for CoNS using culture-based assays. Isolates were confirmed using biochemical tests and PCR. Antimicrobial susceptibility testing was performed using disk diffusion. Data were analyzed by two-sample proportion tests, logistic regression, and generalized linear mixed effects models. The prevalence of CoNS, antibiotic-resistant CoNS, and MRCoNS carriage among spray irrigation workers was 79% (15/19), 32% (6/19), and 16% (3/19), compared to 13% (3/24), 4% (1/24), and 0% (0/24) of controls. Spray irrigators were more likely to be carriers of CoNS (p<0.01), antibiotic-resistant CoNS (p<0.01), and MRCoNS (p=0.02) compared to controls. The odds of CoNS carriage significantly increased with exposure to reclaimed water (p=0.04) even accounting for changes over time (p=0.05). Our data highlight the need to further examine the potential dissemination of CoNS and antibiotic-resistant CoNS from reclaimed water into the environment and human communities and related public health implications.
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Affiliation(s)
- Rachel Rosenberg Goldstein
- Maryland Institute for Applied Environmental Health, University of Maryland School of Public Health, College Park, MD, USA.
| | - Lara Kleinfelter
- Maryland Institute for Applied Environmental Health, University of Maryland School of Public Health, College Park, MD, USA; Department of Microbiology & Immunology, Albert Einstein College of Medicine, Bronx, NY, USA.
| | - Xin He
- Department of Epidemiology and Biostatistics, University of Maryland School of Public Health, College Park, MD, USA.
| | - Shirley A Micallef
- Department of Plant Science and Landscape Architecture, University of Maryland, College Park, MD 20742, USA; Center for Food Safety and Security Systems University of Maryland, College Park, Maryland, USA.
| | - Ashish George
- Maryland Institute for Applied Environmental Health, University of Maryland School of Public Health, College Park, MD, USA.
| | - Shawn G Gibbs
- Department of Environmental Health, Indiana University School of Public Health, Bloomington, Indiana, USA,.
| | - Amy R Sapkota
- Maryland Institute for Applied Environmental Health, University of Maryland School of Public Health, College Park, MD, USA
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McClay K, Mehboob S, Yu J, Santarsiero BD, Deng J, Cook JL, Jeong H, Johnson ME, Steffan RJ. Indole trimers with antibacterial activity against Gram-positive organisms produced using combinatorial biocatalysis. AMB Express 2015; 5:125. [PMID: 26112315 PMCID: PMC4480272 DOI: 10.1186/s13568-015-0125-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2015] [Accepted: 06/10/2015] [Indexed: 11/22/2022] Open
Abstract
The I100V isoform of toluene-4-monooxygenase was used to catalyze the oxidative polymerization of anthranil and various indoles under mildly acidic conditions, favoring the production of trimers. Compounds produced in sufficient yield were purified and tested for their ability to inhibit the growth of B. anthracis, E. faecalis, L. monocytogenes, S. aureus, and in some cases, F. tularensis. 15 of the compounds displayed promising antibacterial activity (MIC < 5 µg/ml) against one or more of the strains tested, with the best MIC values being <0.8 µg/ml. All of these compounds had good selectivity, showing minimal cytotoxicity towards HepG2 cells. The structure was solved for six of the compounds that could be crystallized, revealing that minimally two classes of indole based trimers were produced. One compound class produced was a group of substituted derivatives of the natural product 2,2-bis(3-indolyl) indoxyl. The other group of compounds identified was classified as tryptanthrin-like compounds, all having multi-ring pendant groups attached at position 11 of tryptanthrin. One compound of particular interest, SAB-J85, had a structure that suggests that any compound, with a ring structure that can be activated by an oxygenase, might serve as a substrate for combinatorial biocatalysis.
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Huijbers PMC, Blaak H, de Jong MCM, Graat EAM, Vandenbroucke-Grauls CMJE, de Roda Husman AM. Role of the Environment in the Transmission of Antimicrobial Resistance to Humans: A Review. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2015; 49:11993-2004. [PMID: 26355462 DOI: 10.1021/acs.est.5b02566] [Citation(s) in RCA: 222] [Impact Index Per Article: 22.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
To establish a possible role for the natural environment in the transmission of clinically relevant AMR bacteria to humans, a literature review was conducted to systematically collect and categorize evidence for human exposure to extended-spectrum β-lactamase-producing Enterobacteriaceae, methicillin-resistant Staphylococcus aureus, and vancomycin-resistant Enterococcus spp. in the environment. In total, 239 datasets adhered to inclusion criteria. AMR bacteria were detected at exposure-relevant sites (35/38), including recreational areas, drinking water, ambient air, and shellfish, and in fresh produce (8/16). More datasets were available for environmental compartments (139/157), including wildlife, water, soil, and air/dust. Quantitative data from exposure-relevant sites (6/35) and environmental compartments (11/139) were scarce. AMR bacteria were detected in the contamination sources (66/66) wastewater and manure, and molecular data supporting their transmission from wastewater to the environment (1/66) were found. The abundance of AMR bacteria at exposure-relevant sites suggests risk for human exposure. Of publications pertaining to both environmental and human isolates, however, only one compared isolates from samples that had a clear spatial and temporal relationship, and no direct evidence was found for transmission to humans through the environment. To what extent the environment, compared to the clinical and veterinary domains, contributes to human exposure needs to be quantified. AMR bacteria in the environment, including sites relevant for human exposure, originate from contamination sources. Intervention strategies targeted at these sources could therefore limit emission of AMR bacteria to the environment.
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Affiliation(s)
- Patricia M C Huijbers
- Quantitative Veterinary Epidemiology Group, Wageningen Institute of Animal Sciences (WIAS), Wageningen University , P.O. Box 338, 6700 AH Wageningen, The Netherlands
- Centre for Zoonoses and Environmental Microbiology, Centre for Infectious Disease Control (CIb), National Institute for Public Health and the Environment (RIVM) , P.O. Box 1, 3720 BA Bilthoven, The Netherlands
| | - Hetty Blaak
- Centre for Zoonoses and Environmental Microbiology, Centre for Infectious Disease Control (CIb), National Institute for Public Health and the Environment (RIVM) , P.O. Box 1, 3720 BA Bilthoven, The Netherlands
| | - Mart C M de Jong
- Quantitative Veterinary Epidemiology Group, Wageningen Institute of Animal Sciences (WIAS), Wageningen University , P.O. Box 338, 6700 AH Wageningen, The Netherlands
| | - Elisabeth A M Graat
- Quantitative Veterinary Epidemiology Group, Wageningen Institute of Animal Sciences (WIAS), Wageningen University , P.O. Box 338, 6700 AH Wageningen, The Netherlands
| | | | - Ana Maria de Roda Husman
- Centre for Zoonoses and Environmental Microbiology, Centre for Infectious Disease Control (CIb), National Institute for Public Health and the Environment (RIVM) , P.O. Box 1, 3720 BA Bilthoven, The Netherlands
- Faculty of Veterinary Medicine, Institute for Risk Assessment Sciences (IRAS), Utrecht University , P.O. Box 80178, 3508 TD Utrecht, The Netherlands
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MRSA: a density-equalizing mapping analysis of the global research architecture. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2014; 11:10215-25. [PMID: 25272080 PMCID: PMC4210976 DOI: 10.3390/ijerph111010215] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/17/2014] [Revised: 09/22/2014] [Accepted: 09/23/2014] [Indexed: 11/29/2022]
Abstract
Methicillin-resistant Staphylococcus aureus (MRSA) has evolved as an alarming public health thread due to its global spread as hospital and community pathogen. Despite this role, a scientometric analysis has not been performed yet. Therefore, the NewQIS platform was used to conduct a combined density-equalizing mapping and scientometric study. As database, the Web of Science was used, and all entries between 1961 and 2007 were analyzed. In total, 7671 entries were identified. Density equalizing mapping demonstrated a distortion of the world map for the benefit of the USA as leading country with a total output of 2374 publications, followed by the UK (1030) and Japan (862). Citation rate analysis revealed Portugal as leading country with a rate of 35.47 citations per article, followed by New Zealand and Denmark. Country cooperation network analyses showed 743 collaborations with US-UK being most frequent. Network citation analyses indicated the publications that arose from the cooperation of USA and France as well as USA and Japan as the most cited (75.36 and 74.55 citations per collaboration article, respectively). The present study provides the first combined density-equalizing mapping and scientometric analysis of MRSA research. It illustrates the global MRSA research architecture. It can be assumed that this highly relevant topic for public health will achieve even greater dimensions in the future.
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