Comparative Assessment of Filtration- and Precipitation-Based Methods for the Concentration of SARS-CoV-2 and Other Viruses from Wastewater

ABSTRACT Wastewater-based epidemiology (WBE) has been widely used to track levels of SARS-CoV-2 infection in the community during the COVID-19 pandemic. Due to the rapid expansion of WBE, many methods have been used and developed for virus concentration and detection in wastewater. However, very lit...

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Main Authors: Kata Farkas, Cameron Pellett, Natasha Alex-Sanders, Matthew T. P. Bridgman, Alexander Corbishley, Jasmine M. S. Grimsley, Barbara Kasprzyk-Hordern, Jessica L. Kevill, Igor Pântea, India S. Richardson-O’Neill, Kathryn Lambert-Slosarska, Nick Woodhall, Davey L. Jones
Format: Article
Language:English
Published: American Society for Microbiology 2022-08-01
Series:Microbiology Spectrum
Subjects:
Online Access:https://journals.asm.org/doi/10.1128/spectrum.01102-22
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author Kata Farkas
Cameron Pellett
Natasha Alex-Sanders
Matthew T. P. Bridgman
Alexander Corbishley
Jasmine M. S. Grimsley
Barbara Kasprzyk-Hordern
Jessica L. Kevill
Igor Pântea
India S. Richardson-O’Neill
Kathryn Lambert-Slosarska
Nick Woodhall
Davey L. Jones
author_facet Kata Farkas
Cameron Pellett
Natasha Alex-Sanders
Matthew T. P. Bridgman
Alexander Corbishley
Jasmine M. S. Grimsley
Barbara Kasprzyk-Hordern
Jessica L. Kevill
Igor Pântea
India S. Richardson-O’Neill
Kathryn Lambert-Slosarska
Nick Woodhall
Davey L. Jones
author_sort Kata Farkas
collection DOAJ
description ABSTRACT Wastewater-based epidemiology (WBE) has been widely used to track levels of SARS-CoV-2 infection in the community during the COVID-19 pandemic. Due to the rapid expansion of WBE, many methods have been used and developed for virus concentration and detection in wastewater. However, very little information is available on the relative performance of these approaches. In this study, we compared the performance of five commonly used wastewater concentration methods for the detection and quantification of pathogenic viruses (SARS-CoV-2, norovirus, rotavirus, influenza, and measles viruses), fecal indicator viruses (crAssphage, adenovirus, pepper mild mottle virus), and process control viruses (murine norovirus and bacteriophage Phi6) in laboratory spiking experiments. The methods evaluated included those based on either ultrafiltration (Amicon centrifugation units and InnovaPrep device) or precipitation (using polyethylene glycol [PEG], beef extract-enhanced PEG, and ammonium sulfate). The two best methods were further tested on 115 unspiked wastewater samples. We found that the volume and composition of the wastewater and the characteristics of the target viruses greatly affected virus recovery, regardless of the method used for concentration. All tested methods are suitable for routine virus concentration; however, the Amicon ultrafiltration method and the beef extract-enhanced PEG precipitation methods yielded the best recoveries. We recommend the use of ultrafiltration-based concentration for low sample volumes with high virus titers and ammonium levels and the use of precipitation-based concentration for rare pathogen detection in high-volume samples. IMPORTANCE As wastewater-based epidemiology is utilized for the surveillance of COVID-19 at the community level in many countries, it is crucial to develop and validate reliable methods for virus detection in sewage. The most important step in viral detection is the efficient concentration of the virus particles and/or their genome for subsequent analysis. In this study, we compared five different methods for the detection and quantification of different viruses in wastewater. We found that dead-end ultrafiltration and beef extract-enhanced polyethylene glycol precipitation were the most reliable approaches. We also discovered that sample volume and physico-chemical properties have a great effect on virus recovery. Hence, wastewater process methods and start volumes should be carefully selected in ongoing and future wastewater-based national surveillance programs for COVID-19 and beyond.
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spelling doaj.art-070cc5f6a03b4b18a6f910f417021b082022-12-22T03:44:53ZengAmerican Society for MicrobiologyMicrobiology Spectrum2165-04972022-08-0110410.1128/spectrum.01102-22Comparative Assessment of Filtration- and Precipitation-Based Methods for the Concentration of SARS-CoV-2 and Other Viruses from WastewaterKata Farkas0Cameron Pellett1Natasha Alex-Sanders2Matthew T. P. Bridgman3Alexander Corbishley4Jasmine M. S. Grimsley5Barbara Kasprzyk-Hordern6Jessica L. Kevill7Igor Pântea8India S. Richardson-O’Neill9Kathryn Lambert-Slosarska10Nick Woodhall11Davey L. Jones12Centre for Environmental Biotechnology, School of Natural Sciences, Bangor University, Bangor, Gwynedd, United KingdomCentre for Environmental Biotechnology, School of Natural Sciences, Bangor University, Bangor, Gwynedd, United KingdomCentre for Environmental Biotechnology, School of Natural Sciences, Bangor University, Bangor, Gwynedd, United KingdomCentre for Environmental Biotechnology, School of Natural Sciences, Bangor University, Bangor, Gwynedd, United KingdomRoyal (Dick) School of Veterinary Studies and The Roslin Institute, University of Edinburgh, Roslin, United KingdomUK Health Security Agency, Environmental Monitoring for Health Protection, London, United KingdomDepartment of Chemistry, University of Bath, Bath, United KingdomCentre for Environmental Biotechnology, School of Natural Sciences, Bangor University, Bangor, Gwynedd, United KingdomCentre for Environmental Biotechnology, School of Natural Sciences, Bangor University, Bangor, Gwynedd, United KingdomCentre for Environmental Biotechnology, School of Natural Sciences, Bangor University, Bangor, Gwynedd, United KingdomCentre for Environmental Biotechnology, School of Natural Sciences, Bangor University, Bangor, Gwynedd, United KingdomCentre for Environmental Biotechnology, School of Natural Sciences, Bangor University, Bangor, Gwynedd, United KingdomCentre for Environmental Biotechnology, School of Natural Sciences, Bangor University, Bangor, Gwynedd, United KingdomABSTRACT Wastewater-based epidemiology (WBE) has been widely used to track levels of SARS-CoV-2 infection in the community during the COVID-19 pandemic. Due to the rapid expansion of WBE, many methods have been used and developed for virus concentration and detection in wastewater. However, very little information is available on the relative performance of these approaches. In this study, we compared the performance of five commonly used wastewater concentration methods for the detection and quantification of pathogenic viruses (SARS-CoV-2, norovirus, rotavirus, influenza, and measles viruses), fecal indicator viruses (crAssphage, adenovirus, pepper mild mottle virus), and process control viruses (murine norovirus and bacteriophage Phi6) in laboratory spiking experiments. The methods evaluated included those based on either ultrafiltration (Amicon centrifugation units and InnovaPrep device) or precipitation (using polyethylene glycol [PEG], beef extract-enhanced PEG, and ammonium sulfate). The two best methods were further tested on 115 unspiked wastewater samples. We found that the volume and composition of the wastewater and the characteristics of the target viruses greatly affected virus recovery, regardless of the method used for concentration. All tested methods are suitable for routine virus concentration; however, the Amicon ultrafiltration method and the beef extract-enhanced PEG precipitation methods yielded the best recoveries. We recommend the use of ultrafiltration-based concentration for low sample volumes with high virus titers and ammonium levels and the use of precipitation-based concentration for rare pathogen detection in high-volume samples. IMPORTANCE As wastewater-based epidemiology is utilized for the surveillance of COVID-19 at the community level in many countries, it is crucial to develop and validate reliable methods for virus detection in sewage. The most important step in viral detection is the efficient concentration of the virus particles and/or their genome for subsequent analysis. In this study, we compared five different methods for the detection and quantification of different viruses in wastewater. We found that dead-end ultrafiltration and beef extract-enhanced polyethylene glycol precipitation were the most reliable approaches. We also discovered that sample volume and physico-chemical properties have a great effect on virus recovery. Hence, wastewater process methods and start volumes should be carefully selected in ongoing and future wastewater-based national surveillance programs for COVID-19 and beyond.https://journals.asm.org/doi/10.1128/spectrum.01102-22enteric virusesenvironmental virologyhuman respiratory virusespublic health surveillancesewage concentration
spellingShingle Kata Farkas
Cameron Pellett
Natasha Alex-Sanders
Matthew T. P. Bridgman
Alexander Corbishley
Jasmine M. S. Grimsley
Barbara Kasprzyk-Hordern
Jessica L. Kevill
Igor Pântea
India S. Richardson-O’Neill
Kathryn Lambert-Slosarska
Nick Woodhall
Davey L. Jones
Comparative Assessment of Filtration- and Precipitation-Based Methods for the Concentration of SARS-CoV-2 and Other Viruses from Wastewater
Microbiology Spectrum
enteric viruses
environmental virology
human respiratory viruses
public health surveillance
sewage concentration
title Comparative Assessment of Filtration- and Precipitation-Based Methods for the Concentration of SARS-CoV-2 and Other Viruses from Wastewater
title_full Comparative Assessment of Filtration- and Precipitation-Based Methods for the Concentration of SARS-CoV-2 and Other Viruses from Wastewater
title_fullStr Comparative Assessment of Filtration- and Precipitation-Based Methods for the Concentration of SARS-CoV-2 and Other Viruses from Wastewater
title_full_unstemmed Comparative Assessment of Filtration- and Precipitation-Based Methods for the Concentration of SARS-CoV-2 and Other Viruses from Wastewater
title_short Comparative Assessment of Filtration- and Precipitation-Based Methods for the Concentration of SARS-CoV-2 and Other Viruses from Wastewater
title_sort comparative assessment of filtration and precipitation based methods for the concentration of sars cov 2 and other viruses from wastewater
topic enteric viruses
environmental virology
human respiratory viruses
public health surveillance
sewage concentration
url https://journals.asm.org/doi/10.1128/spectrum.01102-22
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