Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 19 of 19 for “"Shiga toxin-producing Escherichia coli"”.
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Modeling for thermal resistance of non-O157 shiga toxin producing Escherichia coli in ground beef
… a predictive inactivation model for non-O157 shiga toxin producing <em>Escherichia coli</em> (STEC) in ground beef was developed. Six strains of non-O157 STEC; <em>E. coli</em> O26:H1, <em>E. coli</em> O45:H2, <em>E. coli</em> O103:H2, <em>E. coli </em>O111:H8, <em>E. coli</em> O121:H9, and …
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One Health-One City; the extent of Shiga-toxin producing Escherichia coli in Cape Town
The estimated global burden of STEC (Shiga toxin producing Escherichia coli) is 2,481,511 illnesses, 269 deaths, and 26,827 DALYs with 48% of these being foodborne. This thesis provides information on STEC diagnostic strategy, undetected STEC in a tertiary referral hospital in Cape Town, and the …
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Integrating Spatial and Temporal Methods Into Surveillance for Shiga Toxin Producing Escherichia Coli (Stec) O157:H7 in Illinois
Temporal and spatial clustering was identified for sporadic cases. Temporal patterns showed an increase in cases from late spring to early fall annually. Areas of decreased risk were found in the southern third of the state and the most urban areas surrounding Chicago. Risk factors associated with …
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Characterization of Shiga-toxin Producing Escherichia coli Infections and Cryptosporidiosis in South Dakota with Respect to Animal Exposures, 2012
<p>Shiga-toxin producing strains of <em>Escherichia coli</em> (STEC) and <em>Cryptosporidium</em> spp. are significant causes of illness in humans. Incidence rates of these illnesses are higher in South Dakota than in the United States as a whole. Transmission of these agents to people through …
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Shiga Toxin-Producing Escherichia coli: a Public Health Challenge in the Pre-Harvest Stage of the Farm-to-Table Continuum
Escherichia coli is part of the normal gastrointestinal microbiota of many animals, especially cattle. While most strains are commensal, Shiga toxin-producing E. coli (STEC) can cause severe human illness. Pathogenicity of STEC is associated with genes such as those encoding Shiga toxins, …
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Effects of low molecular weight compounds on growth, virulence gene expression and cytotoxic activity of Shiga toxin-producing Escherichia coli O157:H7
… OF MISSOURI-COLUMBIA AT AUTHOR'S REQUEST.] Shiga toxin-producing Escherichia coli (STEC) infections are clinically associated with hemorrhagic colitis (HC) and hemolytic uremic syndrome (HUS), and are the leading cause of acute renal failure in children. A series of novel low molecular …
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Isolation And Molecular Characterization Of Shiga Toxin Producing Escherichia coli In Cattle, Water And Diarrhoeal Children From The Pastoral Systems Of Southwestern Uganda
… for STEC excretion. STEC was isolated from E. coli in 7 of 80 (8.8%) children and in 15 of 216 (6.9%) bovines in phase 1. Similarly, STEC was isolated from 11 of 142 (7.7%) E. coli carrying children and 3 of 45 (6.7%) water samples in phase 2. Molecular characterization further ascertained the …
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Development of 11-plex assay for the rapid screening of samples for detection of Shiga toxin-producing E. coli
Shiga toxin-producing Escherichia coli (STEC) have been identified by the USDA as a serious threat to the nations health stemming from contaminations in the food supply, specifically, the beef chain. I have developed an assay that is able to screen samples for STEC in a rapid and multiplexed …
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MOL-PCR For SNP Based Detection and Characterization of STEC non-O157 Strains
Shiga toxin-producing Escherichia coli (STEC) strains are important food-borne pathogens that have been linked to human illness. In the United States, STEC O157:H7 strains have been attributed to the majority of disease and outbreaks; however, the frequency of disease associated with STEC non-O157 …
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Jautienoje aptiktų Šiga toksiną išskiriančių Escherichia coli identifikavimas ir genominė analizė /
Shiga toxin-producing Escherichia coli (STEC) is one of the most common foodborne pathogens, characterized by the synthesis of Stx1 and/or Stx2 toxins. STEC is associated with numerous human diseases worldwide, ranging from mild diarrhea to hemorrhagic colitis (HC), hemolytic uremic syndrome (HUS) …
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Differential Interactions of Lipopolysaccharides with Lipid Bilayers: Applications for Pathogen Detection
… isolating amphiphilic LPS from seven strains of Shiga toxin-producing Escherichia coli, and developing highly specific monoclonal antibodies against the O antigen regions of the same. We demonstrate the use of a targeted detection technique, called membrane insertion, which facilitates the …
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Novel Approaches to Exposure Assessment and Dose Response to Contaminants in Drinking Water and Food
… versus for children. Food contaminants, such as Shiga toxin producing Escherichia coli (STEC) in beef products, can be mitigated through a quantitative microbial risk assessment (QMRA) framework that follows a farm-to-fork model. Methods to ensure greatest microbial reduction include: employed …
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Development and Evaluation of a Multiplex Suspension Array Protocol for the Detection of Enteric Pathogens from Clinical Specimens
… histolytica) and six virulence determinants of shiga toxin-producing Escherichia coli (STEC), enterotoxigenic Escherichia coli (ETEC), enteroinvasive Escherichia coli (EIEC) and Shigella spp. Precision and limits of detections were established for both assays. The sensitivity and specificity of …
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Assessment of consumers' knowledge, attitudes, awareness, and beliefs of food handling and beef safety handling behaviors
… pathogens of concern for beef products are Shiga-toxin producing Escherichia coli (STEC). STEC are associated with approximately 265,000 illnesses and 3,600 hospitalizations annually. Since 2006, there have been 6 STEC outbreaks in the United States and 18 cases in Canada attributed to MT …
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E. COLI STEC MONITORING IN A ONE HEALTH APPROACH.
This PhD thesis investigates the epidemiology of Shiga toxin-producing Escherichia coli (STEC) in dairy herds, employing a One Health approach to enhance surveillance and public health interventions. Recognizing the significant public health threat posed by STEC, particularly its association with …
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Efficacy of the Microtally® Mitt for sampling of beef carcasses
… loss due to pathogen contamination. Seven Shiga toxin-producing Escherichia coli (STEC) have been classified as adulterants in ground beef and any beef cuts intended for nonintact use. Therefore, testing carcasses and trimmings is a crucial step for identifying pathogenically contaminated …
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Impacts of low-water activity food type on inactivation kinetics and models of foodborne pathogens treated with low-temperature, vacuum-assisted steam processing
… and studying the thermal resistances of two E. coli strains in low-water activity solutions. Low-temperature, vacuum-assisted steam (vacuum-steam) was evaluated as a potential intervention and preventive control to remove pathogens from the surface of LWAF without using high-heat treatments that …
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Agent-based and contact network modeling applications for Escherichia coli transmission in commercial feedlot settings
Shiga toxin-producing Escherichia coli (STEC) are recognized as a major food-borne pathogens with outbreaks, human infections, and occasional deaths associated with the consumption of contaminated foods. Cattle are recognized as a primary reservoir for STEC, though the transmission dynamics of STEC …