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Articles 1 - 12 of 12
Full-Text Articles in Entire DC Network
Enumeration, Isolation, And Detection Of Campylobacter Species From Food Stuffs, Fecal Samples, And River Water Of East Tennessee, Molly Albin West
Enumeration, Isolation, And Detection Of Campylobacter Species From Food Stuffs, Fecal Samples, And River Water Of East Tennessee, Molly Albin West
Doctoral Dissertations
Campylobacter species (spp.) are a leading cause of bacterial foodborne illness. These Gram-negative, microaerophilic microorganisms are found within the intestinal tracks of warm-blooded animals and in humans can cause a gastroenteritis, campylobacteriosis. Recent outbreaks are linked to raw milk, water, and puppies; however, these outbreak isolates have expressed antibiotic resistance, a main treatment line for campylobacteriosis. While Campylobacter spp. detection improves, cases are mainly sporadic and largely underreported. East Tennessee counties experience a higher prevalence of campylobacteriosis compared to other regions of the state based upon Tennessee Department of Health (TDH) surveillance. It is important for researchers to explore the …
Current And Potential Treatments For Reducing Campylobacter Colonization In Animal Hosts And Disease In Humans, Tylor J. Johnson, Janette M. Shank, Jeremiah G. Johnson
Current And Potential Treatments For Reducing Campylobacter Colonization In Animal Hosts And Disease In Humans, Tylor J. Johnson, Janette M. Shank, Jeremiah G. Johnson
Microbiology Publications and Other Works
Campylobacter jejuni is the leading cause of bacteria-derived gastroenteritis worldwide. In the developed world, Campylobacter is usually acquired by consuming undercooked poultry, while in the developing world it is often obtained through drinking contaminated water. Once consumed, the bacteria adhere to the intestinal epithelium or mucus layer, causing toxin-mediated inhibition of fluid reabsorption from the intestine and invasion-induced inflammation and diarrhea. Traditionally, severe or prolonged cases of campylobacteriosis have been treated with antibiotics; however, overuse of these antibiotics has led to the emergence of antibiotic-resistant strains. As the incidence of antibiotic resistance, emergence of post-infectious diseases, and economic burden associated …
Factors Influencing Product Liability Insurance Adoption Among Tennessee Fruit And Vegetable Farmers, Matthew Robert Edwards
Factors Influencing Product Liability Insurance Adoption Among Tennessee Fruit And Vegetable Farmers, Matthew Robert Edwards
Masters Theses
Foodborne illness outbreaks linked to the consumption of fresh produce expose fruit and vegetable growers to uncertain legal and compensatory costs associated with product liability actions. Product liability insurance protects farmers against the risk of financial loss from product liability actions and may create opportunities for market expansion, but insights from recent focus groups suggest that Tennessee farmers may perceive this insurance coverage as cost prohibitive. This study evaluates the factors influencing adoption of product liability insurance among Tennessee fruit and vegetable producers. Using data from a 2013 survey of Tennessee fruit and vegetable farmers, factors influencing the adoption decision …
Effective Education On Consumers' Food Safety Knowledge, Perceptions, And Behaviors At Local Area Farmers' Markets, Molly Louise Albin
Effective Education On Consumers' Food Safety Knowledge, Perceptions, And Behaviors At Local Area Farmers' Markets, Molly Louise Albin
Masters Theses
Although extensive research has been conducted to understand consumers’ knowledge of food safety risks, there is a lack of research on consumers’ knowledge, perceptions, and behaviors towards risks associated with locally grown, processed, and manufactured foods sold at farmers’ markets. Recently, there has been a movement toward purchasing local foods to support local economies, out of concern for food miles, or because of a perception of higher quality goods. In Tennessee, the number of farmers’ markets has doubled in five years. Furthermore, previous research determined food safety education is most effective if developed with input from the target audience. The …
Sp747-B Manufacturing Formulated Acid Foods In Tennessee, Faith Critzer, P. Michael Davidson, John Mount
Sp747-B Manufacturing Formulated Acid Foods In Tennessee, Faith Critzer, P. Michael Davidson, John Mount
Food, Nutrition and Food Safety
No abstract provided.
Sp747-A Manufacturing Acidified Foods In Tennessee, Faith Critzer
Sp747-A Manufacturing Acidified Foods In Tennessee, Faith Critzer
Food, Nutrition and Food Safety
No abstract provided.
Sp746-B Good Agricultural Practices (Gap) Certification In Tennessee, Faith Critzer, Annette Wszelaki
Sp746-B Good Agricultural Practices (Gap) Certification In Tennessee, Faith Critzer, Annette Wszelaki
Food, Nutrition and Food Safety
No abstract provided.
Sp746-A Developing A Worker Health And Hygiene Program For Fruit And Vegetable Harvesting And Packing Operations, Faith Critzer, Annette Wszelaki
Sp746-A Developing A Worker Health And Hygiene Program For Fruit And Vegetable Harvesting And Packing Operations, Faith Critzer, Annette Wszelaki
Food, Nutrition and Food Safety
No abstract provided.
Intention To Comply With Food Safety Messages In A Crisis As A Function Of Message Source And Message Reliability, Karen June Freberg
Intention To Comply With Food Safety Messages In A Crisis As A Function Of Message Source And Message Reliability, Karen June Freberg
Doctoral Dissertations
A key role of public relations is to manage crises, unexpected yet unpredictable events that cause emotional and physical harm (Coombs, 2007). Among the challenges in handling a crisis effectively is dealing with the various media in which information is presented. Because the use of social media in a crisis is a relatively new phenomenon, further understanding of the challenges and opportunities of these media is warranted. Part of meeting this challenge requires precise modeling of consumer responses to safety messages. To remedy gaps in our understanding of social media and food safety crisis communications, consumer intent to comply with …
Modeling On-Farm Escherichia Coli O157:H7 Population Dynamics, P Ayscue, Cristina Lanzas, R Ivanek, Y T. Grohn
Modeling On-Farm Escherichia Coli O157:H7 Population Dynamics, P Ayscue, Cristina Lanzas, R Ivanek, Y T. Grohn
Faculty Publications and Other Works -- Biomedical and Diagnostic Sciences
Escherichia coli O157:H7 is a potentially fatal foodborne pathogen with a putative reservoir for human infection in feedlot cattle. In order to more effectively identify targets for intervention strategies, we aimed to (1) assess the role of various feedlot habitats in E. coli O157:H7 propagation and (2) provide a framework for examining the relative contributions of animals and the surrounding environment to observed pathogen dynamics. To meet these goals we developed a mathematical model based on an ecological metapopulation framework to track bacterial population dynamics inside and outside the host. We used E. coli O157:H7 microbiological and epidemiological literature to …
The Risk And Control Of Salmonella Outbreaks In Calf-Raising Operations: A Mathematical Modeling Approach, Cristina Lanzas, L D. Warnick, R Ivanek, P Ayscue, D V. Nydam, Y T. Grohn
The Risk And Control Of Salmonella Outbreaks In Calf-Raising Operations: A Mathematical Modeling Approach, Cristina Lanzas, L D. Warnick, R Ivanek, P Ayscue, D V. Nydam, Y T. Grohn
Faculty Publications and Other Works -- Biomedical and Diagnostic Sciences
Salmonellosis in calves has economic and welfare implications, and serves as a potential source of human infections. Our objectives were to assess the risk of Salmonella spread following its introduction into a herd of pre-weaned calves and to evaluate the efficacy of control strategies to prevent and control outbreaks. To meet these objectives, we developed a model of Salmonella transmission within a pre-weaned group of calves based on a well documented outbreak of salmonellosis in a calf-raising operation and other literature. Intervention scenarios were evaluated in both deterministic and stochastic versions of the model. While the basic reproduction number (R0) …
The Effect Of Heterogeneous Infectious Period And Contagiousness On The Dynamics Of Salmonella Transmission In Dairy Cattle, Cristina Lanzas, S Brien, R Ivanek, Y Lo, P P. Chapagain, K A. Ray, P Ayscue, L D. Warnick, Y T. Grohn
The Effect Of Heterogeneous Infectious Period And Contagiousness On The Dynamics Of Salmonella Transmission In Dairy Cattle, Cristina Lanzas, S Brien, R Ivanek, Y Lo, P P. Chapagain, K A. Ray, P Ayscue, L D. Warnick, Y T. Grohn
Faculty Publications and Other Works -- Biomedical and Diagnostic Sciences
The objective of this study was to address the impact of heterogeneity of infectious period and contagiousness on Salmonella transmission dynamics in dairy cattle populations. We developed three deterministic SIR-type models with two basic infected stages (clinically and subclinically infected). In addition, model 2 included long-term shedders, which were defined as individuals with low contagiousness but long infectious period, and model 3 included super-shedders (individuals with high contagiousness and long infectious period). The simulated dynamics, basic reproduction number (R0) and critical vaccination threshold were studied. Clinically infected individuals were the main force of infection transmission for models 1 and 2. …