AI Article Synopsis
- The study examined how long the SARS-CoV virus can survive in various environments, showing it lasts 2 days in hospital wastewater and domestic sewage, but up to 17 days in urine at room temperature.
- At cooler temperatures (4 degrees C), SARS-CoV persists longer, lasting up to 14 days in wastewater and 17 days in feces or urine.
- The research found that free chlorine is more effective than chlorine dioxide in inactivating SARS-CoV, with specific concentrations required for total inactivation, although these levels do not ensure complete disinfection of bacteria like E. coli.
Article Abstract
In this study, the persistence of severe acute respiratory syndrome-associated coronavirus (SARS-CoV) was observed in feces, urine and water. In addition, the inactivation of SARS-CoV in wastewater with sodium hypochlorite and chlorine dioxide was also studied. In vitro experiments demonstrated that the virus could only persist for 2 days in hospital wastewater, domestic sewage and dechlorinated tap water, while 3 days in feces, 14 days in PBS and 17 days in urine at 20 degrees C. However, at 4 degrees C, the SARS-CoV could persist for 14 days in wastewater and at least 17 days in feces or urine. SARS-CoV is more susceptible to disinfectants than Escherichia coli and f2 phage. Free chlorine was found to inactivate SARS-CoV better than chlorine dioxide. Free residue chlorine over 0.5 mg/L for chlorine or 2.19 mg/L for chlorine dioxide in wastewater ensures complete inactivation of SARS-CoV while it does not inactivate completely E. coli and f2 phage.
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Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7112909 | PMC |
| http://dx.doi.org/10.1016/j.jviromet.2005.02.005 | DOI Listing |
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