Survival of E. coli O157:H7, Salmonella Typhimurium, HAdV2 and MNV-1 in river water under dark conditions and varying storage temperatures

Elmahdy, Elmahdy M.; El‐Liethy, Mohamed Azab; Abia, Akebe Luther King; Hemdan, Bahaa A.; Shaheen, Mohamed N F

doi:10.1016/j.scitotenv.2018.08.275

Cited by 36 publications

(15 citation statements)

References 73 publications

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“…Somatic coliphage, AdV and HPyV had

values that were slightly smaller (not significant) than the mean value from the literature review ( Fig. 4 ) ( Ahmed et al., 2014 , 2019 ; Bae and Wuertz, 2015 ; Balleste et al., 2019 ; Chendorain et al., 1998 ; Craig et al., 2019 ; Elmahdy et al., 2018 ; Ibrahim et al., 2019 ; Kirs et al., 2016 ; Prevost et al., 2016 ; Wu et al., 2016 ).…”

Section: Discussionmentioning

confidence: 53%

Persistence of emerging viral fecal indicators in large-scale freshwater mesocosms

Greaves

Stone

et al. 2020

Water Research X

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Fecal indicator bacteria (FIB) are typically used to monitor microbial water quality but are poor representatives of viruses due to different environmental fate. Viral fecal indicators have been proposed as alternatives to FIB; however, data evaluating the persistence of emerging viral fecal indicators under realistic environmental conditions is necessary to evaluate their potential application. In this study, we examined the persistence of five viral fecal indicators, including crAssphage and pepper mild mottle virus (PMMoV), and three bacterial fecal indicators ( E. coli , enterococci and HF183/BacR287) in large-scale experimental ponds and freshwater mesocosms. Observed inactivation rate constants were highly variable and ranged from a minimum of −0.09 d −1 for PMMoV to a maximum of −3.5 d −1 for HF183/BacR287 in uncovered mesocosms. Overall, viral fecal indicators had slower inactivation than bacterial fecal indicators and PMMoV was inactivated more slowly than all other targets. These results demonstrate that bacterial fecal indicators inadequately represent viral fate following aging of sewage contaminated water due to differential persistence, and that currently used fecal indicator monitoring targets demonstrate highly variable persistence that should be considered during water quality monitoring and risk assessment.

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“…Somatic coliphage, AdV and HPyV had

Section: Discussionmentioning

confidence: 53%

Persistence of emerging viral fecal indicators in large-scale freshwater mesocosms

Greaves

Stone

et al. 2020

Water Research X

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“…Depending on the conditions, foodborne viruses can survive in different environments for several months [ 11 , 12 ]. Several weather factors, including rainfall, drought, humidity, temperature, and sunlight, affect the microbial infectivity [ 12 ]. Especially, low temperature, 10–66% relative humidity, and rainfall are closely associated with HuNoV outbreaks [ 73 ].…”

Section: Discussionmentioning

confidence: 99%

“…Droughts have also been shown to result in 100-fold higher concentrations of pathogens in surface waters, thus altering the water quality [ 10 ]. Humidity, temperature, and sunlight can also affect the survival of pathogens [ 11 , 12 ].…”

Section: Introductionmentioning

confidence: 99%

Effects of Weather and Environmental Factors on the Seasonal Prevalence of Foodborne Viruses in Irrigation Waters in Gyeonggi Province, Korea

et al. 2020

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This study aimed to investigate the prevalence of foodborne viruses in reservoirs (an important resource of irrigation water) and its correlation with environmental and weather factors. From May 2017 to November 2018, we visited ten reservoirs and a river in the Anseong region of South Korea and collected a total of 192 samples in accordance with the environment protection agency guidelines. We recorded the weather factors (temperature, humidity, and accumulated precipitation) and investigated the surrounding environment factors (livestock, fishing site, the catchment area of reservoirs, etc.). Our research results show that from the river and reservoirs, the detection rates of human norovirus GII, adenovirus, rotavirus, human norovirus GI, and astrovirus were 27.1, 10.4, 10.4, 4.16, and 3.1%, respectively. Their viral load ranged from −1.48 to 1.55 log10 genome copies/l. However, hepatitis A virus was not detected in any irrigation water sample. Although no sampling was performed in winter, foodborne viruses and male-specific coliphages were frequently found during spring (40.78%) and autumn (39.47%). Interestingly, the significant correlation between the accumulative precipitation and the number of detected norovirus and adenovirus was confirmed by linear regression analysis. Furthermore, when the accumulative precipitation ranged from 20 to 60 mm, it significantly affected the viral load and prevalence. Among the environmental factors, recreational facilities such as fishing sites and bungalow fishing spots were identified as contamination sources by correlation analysis. Our research results confirmed the correlations between environmental contamination factors in the reservoir and weather factors with the prevalence of foodborne viruses in the reservoir. These facilitates the assessment of potential foodborne virus contamination during crop irrigation. In addition, predictive models including environmental and weather factors should be developed for monitoring and controlling the safety of irrigation waters in reservoirs.

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“…From each sampling point 3 wastewater samples were collected at a 3 points along the wididith (edge, center, and edge) 3 times. Samples were taken from 3 sections of the stream to minimize inaccuracies that can be made during data collection and also samples were taken at a depth of about 20 cm just under the water surface (Ibrahim et al, 2019;Shrivastava et al, 2015). Measurements of physico-chemical water quality parameters from the samples were carried out using laboratory analyzes in accordance with the procedures for standard water and wastewater testing methods described for water quality analysis (Shrivastava et al, 2015).…”

Section: Sample Collection and Water Quality Parametersmentioning

confidence: 99%

Evaluation of Point Source Pollutants impact on Water Quality and Self-purification Capacity of Abay River in Ethiopia

Hishe¹

2020

CER

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This study was conducted to evaluate influence of point source pollutants on self-purification capacity of Abay River within 8 kms from Lake Tana to Sebatamit. For assessment of the overall water quality level, the water quality index was used. The river's self-cleaning potential was assessed based on physicochemical parameters as indicators and using the modified Streteer-Phelps model after selecting the best reaeration coefficient through velocity and depth measurements. The outcome of the study showed that TDS, EC, BOD5, Ammonia, temperature, pH, and salinity were found within the permissible limits of EPA. The turbidity was higher than the WHO limit at sampling point two and DO value was below the WHO and EPA limit at sampling points two, three, four, five and six. The result shows that the critical distance and time in which the river attains its self-purification capacity is at 1.3, 2.8 and 0.3 kms from Bahirdar Textile, Bahir Dar municipal and Habesha Tannery Effluent mixing points for 1.68, 0.82 and 0.48 hour, respectively. This showed that the river have good purification capacity at a moment even though the point sources are discharging an effluent which is not properly treated.

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Survival of E. coli O157:H7, Salmonella Typhimurium, HAdV2 and MNV-1 in river water under dark conditions and varying storage temperatures

Cited by 36 publications

References 73 publications

Persistence of emerging viral fecal indicators in large-scale freshwater mesocosms

Persistence of emerging viral fecal indicators in large-scale freshwater mesocosms

Effects of Weather and Environmental Factors on the Seasonal Prevalence of Foodborne Viruses in Irrigation Waters in Gyeonggi Province, Korea

Evaluation of Point Source Pollutants impact on Water Quality and Self-purification Capacity of Abay River in Ethiopia

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