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Journal article
Implications of long-term sample storage on the recovery of viruses from wastewater and biobanking
Water research (Oxford), Vol.265, 122209
2024
Abstract
Wastewater-based monitoring has been widely implemented worldwide for the tracking of SARS-CoV-2 outbreaks and other viral diseases. In many surveillance programmes, unprocessed and processed wastewater samples are often frozen and stored for long periods of time in case the identification and tracing of an emerging health threat becomes necessary. However, extensive sample bioarchives may be difficult to maintain due to limitations in ultra-freezer capacity and associated cost. Furthermore, the stability of viruses in such samples has not been systematically investigated and hence the usefulness of bioarchives is unknown. In this study, we assessed the stability of SARS-CoV-2, influenza viruses, noroviruses and the faecal indicator virus, crAssphage, in raw wastewater and purified nucleic aacid extracts stored at -80 °C for 6–24 months. We found that the isolated viral RNA and DNA showed little signs of degradation in storage over 8–24 months, whereas extensive decay viral and loss of qPCR signal was observed during the storage of raw unprocessed wastewater. The most stable viruses were noroviruses and crAssphage, followed by SARS-CoV-2 and influenza A virus. Based on our findings, we conclude that bioarchives comprised of nucleic acid extracts derived from concentrated wastewater samples may be archived long-term, for at least two years, whereas raw wastewater samples may be discarded after one year.
Details
- Title
- Implications of long-term sample storage on the recovery of viruses from wastewater and biobanking
- Authors/Creators
- Kata Farkas - Bangor UniversityJessica Fletcher - Bangor UniversityJames Oxley - Bangor UniversityNicola Ridding - Bangor UniversityRachel C. Williams - Bangor UniversityNick Woodhall - Bangor UniversityAndrew J. Weightman - Cardiff UniversityGareth Cross - Welsh GovernmentDavey L. Jones - Bangor University
- Publication Details
- Water research (Oxford), Vol.265, 122209
- Publisher
- Elsevier Ltd.
- Number of pages
- 8
- Identifiers
- 991005694765407891
- Copyright
- © 2024 The Authors.
- Murdoch Affiliation
- Centre for Sustainable Farming Systems
- Language
- English
- Resource Type
- Journal article
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