Artículo
Tracking SARS-CoV-2 in rivers as a tool for epidemiological surveillance
Maidana Kulesza, Maria Noel
; Poma, Hugo Ramiro
; Sanguino Jorquera, Diego Gastón
; Reyes, Sarita Isabel
; Said Adamo, María del Milagro
; Mainardi Remis, Juan Martín
; Gutiérrez Cacciabue, Dolores
; Cristobal, Hector Antonio
; Cruz, Mercedes Cecilia
; Aparicio González, Mónica Alicia
; Rajal, Verónica Beatriz
Fecha de publicación:
08/2022
Editorial:
Elsevier Science
Revista:
Science of the Total Environment
ISSN:
0048-9697
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
The aim of this work was to evaluate if rivers could be used for SARS-CoV-2 surveillance. Five sampling points from three rivers (AR-1 and AR-2 in Arenales River, MR-1 and MR-2 in Mojotoro River, and CR in La Caldera River) from Salta (Argentina), two of them receiving discharges from wastewater plants (WWTP), were monitored from July to December 2020. Fifteen water samples from each point (75 in total) were collected and characterized physico-chemically and microbiologically and SARS-CoV-2 was quantified by RT-qPCR. Also, two targets linked to human contributions, human polyomavirus (HPyV) and RNase P, were quantified and used to normalize SARS-CoV-2 concentration, which was compared to reported COVID-19 cases. Statistical analyses allowed us to verify the correlation between SARS-CoV-2 and the concentration of fecal indicator bacteria (FIB), as well as to find similarities and differences between sampling points. La Caldera River showed the best water quality; FIBs were within acceptable limits for recreational activities. Mojotoro River's water quality was not affected by the northern WWTP of the city. Instead, Arenales River presented the poorest water quality; at AR-2 was negatively affected by the discharges of the southern WWTP, which contributed to significant increase of fecal contamination. SARS-CoV-2 was found in about half of samples in low concentrations in La Caldera and Mojotoro Rivers, while it was high and persistent in Arenales River. No human tracers were detected in CR, only HPyV was found in MR-1, MR-2 and AR-1, and both were quantified in AR-2. The experimental and normalized viral concentrations strongly correlated with reported COVID-19 cases; thus, Arenales River at AR-2 reflected the epidemiological situation of the city. This is the first study showing the dynamic of SARS-CoV-2 concentration in an urban river highly impacted by wastewater and proved that can be used for SARS-CoV-2 surveillance to support health authorities.
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Articulos(INIQUI)
Articulos de INST.DE INVEST.PARA LA INDUSTRIA QUIMICA (I)
Articulos de INST.DE INVEST.PARA LA INDUSTRIA QUIMICA (I)
Citación
Maidana Kulesza, Maria Noel; Poma, Hugo Ramiro; Sanguino Jorquera, Diego Gastón; Reyes, Sarita Isabel; Said Adamo, María del Milagro; et al.; Tracking SARS-CoV-2 in rivers as a tool for epidemiological surveillance; Elsevier Science; Science of the Total Environment; 848; 8-2022; 1-14
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