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Human Viral Pathogens in the Wastewater-Source Water-Drinking Water Continuum: Evidence, Health Risks, and Lessons for Future Outbreaks in Low-Income Settings Publisher Pubmed



Gwenzi W1, 14, 15 ; Adelodun B2, 3, 4 ; Kumar P5, 13 ; Ajibade FO6 ; Silva LFO7 ; Choi KS2, 4 ; Selvarajan R8 ; Abia ALK9, 10 ; Gholipour S11 ; Mohammadi F11 ; Nikaeen M11, 12
Authors

Source: Science of the Total Environment Published:2024


Abstract

Human viral pathogens, including SARS-CoV-2 continue to attract public and research attention due to their disruption of society, global health, and the economy. Several earlier reviews have investigated the occurrence and fate of SARS-CoV-2 in wastewater, and the potential to use such data in wastewater-based epidemiology. However, comprehensive reviews tracking SARS-CoV-2 and other viral pathogens in the wastewater-water-drinking water continuum and the associated risk assessment are still lacking. Therefore, to address this gap, the present paper makes the following contributions: (1) critically examines the early empirical results to highlight the occurrence and stability of SARS-CoV-2 in the wastewater-source water-drinking water continuum, (2) discusses the anthropogenic and hydro(geo)logical processes controlling the circulation of SARS-CoV-2 in the wastewater-source water-drinking water continuum, (3) discusses the risky behaviour, drivers and high-risk settings in the wastewater-source water-drinking water continuum, (4) uses the available empirical data on SARS-CoV-2 occurrence in the wastewater-source water-drinking water continuum to discuss human health risks from multiple exposure pathways, gendered aspects of SARS-CoV-2 transmission via shared on-site sanitation systems, and (5) develops and risk mitigation strategy based on the available empirical evidence and quantitative human risk assessment data. Finally, it presents a comprehensive research agenda on SARS-CoV-2/COVID-19 to guide the mitigation of future similar outbreaks in low-income settings. © 2024 Elsevier B.V.
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