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E Coli O157 Articles & Analysis
35 articles found
Improving Water Monitoring for Pathogens and other Microorganisms Water quality and purity is essential for public and environmental health but monitoring drinking water and wastewater for microbial orgamisms can be difficult and time consuming. In this article we want to highlight the Real-time PCR-based detection methods for some major pathogens and microorganisms that increases analysis ...
Some of the pathogens involved are Salmonella spp., Escherichia coli O157:H7, Listeria monocytogenes, hepatitis A, etc. Myriad produce types, such as cantaloupes, romaine lettuce, cucumbers, and even frozen produce, are responsible for these outbreaks.[1] This year, the United States experienced a massive foodborne outbreak of E. ...
To assess attachment of E. coli to the TW rhizosphere, direct measurements of E. coli levels were taken. ...
Blackwater was spiked with Salmonella typhimurium, Escherichia coli O157, Enterococcus faecalis, and Ascaris suum eggs, and treated with urea and/or lime in concentrations up to 0.1% w/w. ...
This study assessed the Escherichia coli O157:H7 infection risk and diarrhoeal disease burden measured in disability-adjusted life years (DALYs) associated with the consumption of wastewater-irrigated lettuce in Kumasi, Ghana using data on E. coli O157:H7 in ready-to-harvest, wastewater-irrigated lettuce. ...
This is the first reported study of a riverbank filtration (RBF) scheme to be assessed following the Australian Guidelines for Managed Aquifer Recharge. A comprehensive staged approach to assess the risks from 12 hazards to human health and the environment has been undertaken. Highest risks from untreated ground and Ganga River water were identified with pathogens, turbidity, iron, manganese, ...
The pathogens evaluated were Salmonella enterica, thermophilic Campylobacter, and Escherichia coli O157:H7, and the suspected enteric pathogen Arcobacter butzleri was also investigated. ...
Giardia lamblia and Escherichia coli were isolated and identified in wastewater samples from the canal and lagoon. ...
This study assessed the die-off of Escherichia coli (E. coli) and Ascaris suum on lettuce (Great Lakes 118) and cabbage (Brassica oleracea var capitata) in wastewater-irrigated fields using comparative mathematical die-off models. The study revealed that none of the survival curves of E. coli and A. suum was ...
Forty-five percent (82/180) of water samples were contaminated with total coliforms. Generic Escherichia coli were present in 9% (16/180) of samples. Using real-time polymerase chain reaction, E. coli O157:H7 was identified in 4% (7/180) of specimens. ...
The antibacterial activity of a water-soluble chitosan derivative prepared by chemical modification to quaternary ammonium compound N,N,N-trimethylchitosan (TC) was investigated against four selected waterborne pathogens: Aeromonas hydrophila ATCC 35654, Yersinia enterocolitica ATCC 9610, Listeria monocytogenes ATCC 19111 and Escherichia coli O157:H7 ATCC 32150. An inactivation of 4 log CFU/ml ...
The efficiency of water disinfection using a ceramic water filter and electrochemical hybrid system was investigated. Escherichia coli O157:H7 was effectively inactivated even when a storage battery, charged using a solar panel device, was used for the electrolysis process. During electrolysis, the rate of microbial inactivation was higher at higher initial Cl− concentrations. This was ...
The internalisation potential of Listeria monocytogenes, Staphylococcus aureus, Escherichia coli O157:H7 and Salmonella enterica subsp. enterica serovar Typhimurium in lettuce was evaluated using seedlings grown in vermiculite in seedling trays as well as hydroponically grown lettuce. Sterile distilled water was spiked with one of the four human pathogenic bacteria (105 CFU/mL) and used to ...
The experimental results showed that DNA sensor can well detect E. coli O157:H7 bacteria at optimal parameters including immobilisation time of 120 minute, MWCNTs of 1 mg, 20 µM DNA probe and pH7. ...
Since numerous pathogens occur in feces, water is monitored for fecal contamination using indicator organisms rather than individual pathogens. Although this approach is supported by health effects data in recreational waters, it is questionable when used for drinking water. Most outbreaks in groundwater occur in systems that have not violated the US EPA's maximum contaminant limit (MCL) ...
First, the pathogen (norovirus, Cryptosporidium, Escherichia coli O157/H7) concentrations in faecal contamination sources around the drinking water source Lake Rådasjön in Sweden were estimated for endemic and epidemic conditions using measured concentrations of faecal indicators (E. coli and Bacteroidales genetic ...
This work tested the hypothesis that E. coli survival after streambed sediment inoculation does not differ significantly from survival in the same sediment after re–inoculation. The E. coli O157:H12 survived in two sediments with markedly different particle size distributions and organic matter contents in ...
Experiments were conducted using lowvoltage alternating current (AC) to inactivate surface adherent Escherichia coli O157:H7 on beef samples. Beef samples (25 × 25 × 25 mm) were inoculated with E. coli and placed in sodium chloride solution which served as an electrolyte. ...
This shift in policy came as a result of the findings of reports from other developed countries which highlighted the risk from persistent pathogens such as Cryptosporidium, Giardia, some enteroviruses; and the pathogenic bacteria Campylobacter and E. coli O157 for drinking water safety. The high virulence of these pathogens found in ...
The objectives of this study were to analyse the effectiveness of native microflora of lettuce and carrot in controlling Escherichia coli O157:H7 and to evaluate the technological application of oregano and rosemary to control E. coli in vegetables stored at ...