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 20 of 22 for “"enteric viruses"”.
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Disinfection of fresh produce contaminated by enteric viruses and their inactivation mechanisms
… foodborne viral illnesses in the United States. Viruses from contaminated irrigation water could be carried to crops, resulting in foodborne infection risks, especially for fresh produce eaten raw. Upon harvest, vegetables are commonly washed by a sanitizer to inactivate viruses that may cause …
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Studies of pathogenesis, innate immunity and therapeutics of human enteric viruses in gnotobiotic pigs
… pigs are an attractive animal model for studying enteric viruses due to their similarities to humans, particularly in regards to the immune system and gastrointestinal anatomy and physiology. Here, to establish a reliable Gn pig model of human norovirus (HuNoV) infection and disease, we determined …
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Resin-based method for concentration of enteric viruses and F-RNA coliphages from water samples
… individual may be exposed to such contamination. Enteric viruses such as noroviruses, rotaviruses, adenoviruses and hepatitis viruses are dispersed by fecal contamination and are a major cause of waterborne diseases in the US and worldwide. Given the variety of viral enteric pathogens and their …
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Study of Infection, Immunity, Vaccine and Therapeutics Using Gnotobiotic Pig Models of Human Enteric Viruses
… evaluating vaccine and therapeutics for human enteric pathogens. Here, we demonstrate Gn pigs as effective large animal models for human enteric viruses, through evaluating human enterovirus 71 (EV71) infection and immunity, and vaccine and therapeutics for human rotavirus (HRV). Gn pigs could …
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Field and laboratory studies concerning the detection of enteric viruses in either settled or disinfected secondary sewage
… to utilize recycled waters. The elimination of viruses pathogenic to humans from recycled waters will depend on the removal efficiencies of treatment processes and the sensitivity of detection methodologies. Enteric viruses can survive current wastewater treatment practices, and some even …
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Gastrointestinal Influences on Poliovirus Replication, Dissemination and Pathogenesis in Mice
Enteric viruses are transmitted between individuals by fecal-oral spread. After oral acquisition, enteric viruses encounter a complex environment within the gastrointestinal (GI) tract, including pH changes, mucus, resident bacteria and a variety of epithelial and immune cell types. Little is known …
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Host Factors That Influence Coxsackievirus B3 Replication and Pathogenensis
Enteric viruses are infectious human pathogens that initiate infection in the gastrointestinal tract. They follow a fecal-oral route of transmission and are spread by contamination of food, water, or contact between individuals. Furthermore, enteric viruses also cause significant morbidity, …
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Evaluation of bacteriophage and viral persistence during alkaline stabilization in sludge and biosolids intended for land application
… methodology for recovery and detection of enteric viruses in sludge and biosolids makes male specific bacteriophages a suitable indicator as an index for enteric viruses, to be used for the monitoring of biosolids to determine treatment effectiveness following lime stabilization.</p>
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Inactivation kinetics of coxsacieviurs B5 with free chlorine
… the chlorine dose required to inactivate certain viruses remains unknown. One such virus is coxsackievirus. Coxsackievirus, along with other enteroviruses, causes a significant number of infections in the United States. These infections can prove fatal to those with relatively weak immune systems …
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The removal of low levels of poliovirus from water by coagulation with alum
Human enteric viruses are present at low levels in sources of potable water. Due to the low minimum infective dose required for such viruses, these low levels are of public health significance and will become more important as water reuse increases. The effectiveness of alum coagulation for virus …
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Molecular characterization of human sapoviruses circulation in the rural communities of Limpopo Province, South Africa
… developing countries. Sapovirus (SV), one of the enteric viruses has been reported to be associated with viral diarrhoea worldwide. Reported studies on SVs in selected provinces of South Africa (SA) have been published based on the patients admitted in the hospitals located in the urban areas. …
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Enteric adenovirus and coliphage as microbial indicators in Singapore's Kallang Basin
… the presence of viral pathogens, such as human enteric viruses, posing significant health risks to the general population. Furthermore, high concentrations of E. coli are often found in tropical environments with no apparent source of fecal contamination. In order to gain comprehensive insight …
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Detection of enteroviruses in marine waters using RT-PCR.
Human enteric viruses present in sewage may find their way into recreational marine waters, causing adverse health effects to exposed individuals. This research project focused on (i) optimization of methods for RT-PCR detection of enteroviruses in marine waters, with particular attention to the …
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Effects of different water sources on MS2 and porcine rotavirus reduction in biosand filters
… and bacteriophages. However, the efficacy of enteric virus reduction in BSFs has not be studied. Furthermore, how the water chemistry of the source water used in BSFs effects virus reduction is not clearly understood. In this study, three bench-scale BSFs were fed daily with groundwater or a …
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Identification and Characterization of Novel Astroviruses
… outbreaks. Detection of novel or unexpected viruses is the first step in identifying agents that could potentially close the diagnostic gap and pave the way for the development of more comprehensive preventative measures and better treatments. This dissertation encompasses the first …
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Human Adenoviruses As Indicators Of Faecal Contamination And Pathogen Indices In The Environment And Shellfish
… this study was to assess the use of human adenoviruses (HAdVs) as occurrence indicators of human enteric viruses in the environment and shellfish. The second aim was to consider human polyomaviruses (HPyVs) for the same roles. To gain a better understanding of the ecology of HAdV, their …
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Rischio igienico sanitario associato al consumo dei molluschi eduli lamellibranchi (M.E.L)
… of shellfish is mainly related to (20%) enteric viruses (Corraine et al., 2007), hepatitis A virus (HAV), norovirus (NV), and marine environment pathogens, such as Vibrio spp, whereas faecal bacteria (Salmonella spp. and Escherichia coli) account just for 4% of the total (Serracca et al., …
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Prevalence of human bocavirus in children with acute gastroenteritis
… have indicated that diarrheal diseases caused by viruses, bacteria and parasites are associated with unsafe drinking water, poor sanitation and hygiene practices which leads to infection in vulnerable individuals. Human Bocavirus (HBoV) have been reported globally in numerous studies as an …
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Validating Pathogen Reduction in Ozone-Biofiltration Water Reuse Applications
… The reduction of Cryptosporidum, Giardia, enteric viruses, pathogenic bacteria and their corresponding surrogate microorganisms (e.g. spore forming bacteria, coliphage) was quantified across the upstream wastewater treatment process and the AWT. In general, the removal of surrogate …
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Study of enteric virus infection and parenteral vaccines in the gnotobiotic pig model
… for studying the pathogenesis and immunity of enteric viruses and the evaluation of immunogenicity and protective efficacy of novel enteric viral vaccines.
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