review · Frontiers in Cellular and Infection Microbiology
Monitoring viral RNA in wastewater serves as an epidemiological tool for the surveillance of SARS-CoV-2. People infected with the virus shed viral ribonucleic acid through various forms of excreta, including faeces, mucus, saliva, and sputum. These biological materials enter community wastewater streams. Identifying SARS-CoV-2 RNA within these systems creates an opportunity to track viral presence across populations and can act as an early warning signal to help prevent and eradicate disease outbreaks. Although wastewater monitoring is currently conducted in multiple regions around the world to track infection trends, the approach also faces a number of recognised limitations that affect its practical use.
Testing wastewater enables public health authorities to detect viral spread across whole communities without relying solely on individual patient testing. Because individuals shed viral material into sewage systems before or during infection, tracking wastewater acts as an early warning indicator. Understanding both the benefits and the limitations of this method helps authorities design more effective surveillance programmes to control infectious disease outbreaks.
The abstract outlines an applied surveillance approach that municipal authorities and public health organisations can use to track viral trends in community wastewater. While the technique is already implemented in several regions worldwide as an early warning tool, the text notes significant operational limitations without detailing particular commercial products, diagnostic assays, or defined routes to market.
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The coronavirus disease 2019 (COVID-19) pandemic has prompted a lot of questions globally regarding the range of information about the virus’s possible routes of transmission, diagnostics, and therapeutic tools. Worldwide studies have pointed out the importance of monitoring and early surveillance techniques based on the identification of viral RNA in wastewater. These studies indicated the presence of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) RNA in human feces, which is shed via excreta including mucus, feces, saliva, and sputum. Subsequently, they get dumped into wastewater, and their presence in wastewater provides a possibility of using it as a tool to help prevent and eradicate the virus. Its monitoring is still done in many regions worldwide and serves as an early “warning signal”; however, a lot of limitations of wastewater surveillance have also been identified.
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DOI: 10.3389/fcimb.2022.978643
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