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 9 of 9 for “"Salmonella enterica serovars"”.
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Analysis of Host Specificity in Salmonella Enterica Serovars Typhi and Typhimurium
… transfer of chromosomal DNA between different serovars of Salmonella in order to create genetic hybrids. Using the conserved 16S rRNA gene from Salmonella as a portable region of homology, I created high frequency of recombination (Hfr) conjugal donors that contain an origin of transfer within …
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Survival and Growth of attenuated Salmonella enterica serovars Newport and Typhimurium in Media Culture and Tomatoes
… tomatoes have been associated with 15 multistate Salmonella outbreaks between 1973 and 2010. While, S. enterica survival has been studied in tomato plants, field studies have been limited. To understand pathogen growth and survival, in crop fields, surrogate or attenuated organisms must be …
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Genome evolutionary studies of the Salmonella enterica serovars: implications for the dynamics of horizontal gene transfer, the pangenome concept, and bacterial and archaeal taxonomy
… genes and pseudogene accumulation in the Salmonella enterica serovars. The wide range of diseases amongst a wide range of hosts elicited by the S. enterica serovars suggests that they have a diverse complement of presumably horizontally acquired genes that contribute to their unique …
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Effect of Ethanol Vapor Fumigation on Survival of Salmonella enterica biofilms on Whole Black Peppercorns
Salmonella embedded biofilms were formed on whole black peppercorns and treated with ethanol vapor under atmospheric pressure conditions and under vacuum assisted pressure conditions. The effect of ethanol vapor, heat and vacuum pressure on the survival of multiple Salmonella enterica serovars …
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Development of novel conjugate vaccines against Salmonella
Various Salmonella enterica serovars can cause human diseases that range in severity from a mild gastroenteritis to a severe systemic infection known as typhoid fever. The emergence of antibiotic resistance in S. enterica strains poses a major problem in treatment of patients in many regions of the …
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Characterization of the grvA and grvB Anti -Virulence Genes Encoded by the Gifsy-2 and Gifsy -1 Bacteriophages of Salmonella Typhimurium
Salmonella enterica serovars cause diseases ranging from a mild, self-limiting gastroenteritis to a potentially life-threatening enteric fever in a variety of hosts. The serovar S. typhimurium causes a typhoid-like fever in mice which serves as an animal model of enteric fever. The lambdoid phages, …
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Antibiotic and biocide resistance in Salmonella enterica and Escherichia coli 0157
… investigated the potential for resistance in Salmonella enterica serovars Enteritidis, Typhimurium, Virchow and Escherichia call 0157 to commonly used biocides, to identify mechanisms underlying resistance and whether these provided cross-resistance to antibiotics. Salmonella enterica and E. …
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The Structural and Biochemical Characterization of Salmonella Host Specificity Determinant Gifsy-2 Gene E
<p>Salmonella enterica continues to be a significant public health concern, causing an estimated 93.8 million cases of non-typhoidal salmonellosis and 21 million cases of typhoid fever worldwide each year. There are thousands of Salmonella enterica serovars, some with a very specific host set, and …
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Prevalence, virulence factors and antimicrobial resistance of salmonella species from beef in retail outlets from KwaZulu-Natal province, South Africa
Non-typhoid Salmonella enterica subsp. enterica serotypes are one of the leading causes of foodborne infections worldwide. Furthermore, the emergence and spread of antimicrobial-resistant Salmonellastrains is a potential global challenge. This study was aimed at determining the prevalence, …