Co-Authors:
Nasser, A.M., Division of Environmental Sciences, Graduate School Applied Sci Technol, The Hebrew University, Jerusalem 91904, Israel
Tchorch, Y., Division of Environmental Sciences, Graduate School Applied Sci Technol, The Hebrew University, Jerusalem 91904, Israel
Fattal, B., Division of Environmental Sciences, Graduate School Applied Sci Technol, The Hebrew University, Jerusalem 91904, Israel
Abstract:
This study was designed to compare the die-off of E.coli and F +bacteriophages with that of enteric pathogenic viruses in groundwater and raw wastewater at various temperatures. At low temperatures, the die-off of E.coli was greater than that of HAV and poliovirus 1. Under conditions compatible with bacterial growth no die-off of E.coli was observed. Under most experimental conditions no die-off was observed for F +bacteriophages. The survival of HAV and poliovirus 1 was strongly affected by temperature. Regardless of the water type, the highest die-off of viruses was observed at 30°C, whereas at 10°C the titer of HAV and poliovirus 1 was reduced by 1 to 2 log(1O) after 90 days incubation. The data presented in this study indicated that E.coli cannot serve as an index for the survival of HAV and poliovirus 1 in ground and wastewater. Since F +bacteriophages were not affected by the tested conditions, their acceptance as indicators for viral pollution of water sources needs further evaluation.
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הדגשת קישורים
חסימת אנימציה
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