| Autor: |
Maritza Cárdenas-Calle, Leandro Patiño, Beatríz Pernia, Roberto Erazo, Carlos Muñoz, Magaly Valencia-Avellan, Mariana Lozada, Mary Regato-Arrata, Miguel Barrera, Segundo Aquino, Stalyn Moyano, Stefania Fuentes, Javier Duque, Luis Velazquez-Araque, Bertha Carpio, Carlos Méndez-Roman, Carlos Calle, Guillermo Cárdenas, David Guizado-Herrera, Clara Lucía Tello, Veronica Bravo-Basantes, Josué Zambranod, Jhannelle Francis, Miguel Uyaguari |
| Rok vydání: |
2022 |
| Popis: |
Wastewater surveillance represents an alternative approach for the diagnosis and early detection of infectious agents of public health importance. This study aimed to evaluate SARS-CoV-2 and other quality markers in oxidation lagoons, estuarine areas and seawater at Guayas and Santa Elena in Ecuador. Sample collections were conducted twice at 42 coastal sites and 2 oxidation lagoons during dry and rainy seasons (2020-2021). Physico-chemical and microbiological parameters were evaluated to determine organic pollution. Quantitative reverse transcription PCR was conducted to detect SARS-CoV-2. Results showed high levels of Escherichia coli and low dissolved oxygen concentrations. SARS-CoV-2 was detected in sea-waters and estuaries with salinity levels between 34.2-36.4 PSU and 28.8 °C-31.3 °C. High amounts of fecal coliforms were detected and correlated with the SARS-CoV-2 shedding. We recommend to decentralized autonomous governments in developing countries such as Ecuador to implement corrective actions and establish medium-term mechanisms to minimize a potential contamination route.HIGHLIGHTSSARS-CoV-2 RNA was detected in estuaries, bays and the wastewater treatment systems in Playas and Santa Elena.High levels of fecal coliforms were detected along shorelines.Water quality parameters revealed a negative impact on the beaches studied associated with human activities. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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