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 28 for “"infection prevalence"”.
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Intestinal Parasitic Infection: Prevalence, Risk Factors and Consequences for Child Growth, Iron Status and Development in Rural Ecuador
Intestinal parasitic infections (IPI's) are considered to be a public health problem of global importance by the World Health Organization. The present epidemiologic survey study investigated the prevalence, risk factors, and consequences of pathogenic IPI's on the growth, nutrition and psychomotor …
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Individual-based modeling of white-tailed deer (Odocoileus virginianus) movements and epizootiology
… were estimated by fitting to published trends in infection prevalence, assuming that infection probability during an encounter was equal for all age classes, so infection prevalence varied with sex- and age-specific behavior. DLD simulations of chronic wasting disease epizootiology demonstrated …
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Evaluating efficacy of anti-Batrachochytrium dendrobatidis probiotic treatment on Pacific Chorus Frogs (Pseudacris regilla) at current and modeled climate change temperatures
… bacteria to provide protection against Bd infection, but these studies have had mixed success. Our study evaluated anti-Bd bacteria isolated from the skin of Pacific chorus frogs (Pseudacris regilla) and Columbia spotted frogs (Rana luteiventris) in Turnbull National Wildlife Refuge (TNWR) …
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Transmission Competence of B. burgdorferi Infected Ixodes Ticks and Development of an OspC-Based Lyme Disease Vaccine
… of Bb. We wanted to check for differences in Bb infection prevalence between the questing (actively moving and looking for hosts on which to feed) and diapausal (in suspended development) nymphs over a year. Our second objective is to design a vaccine candidate utilizing OspC. Finally, we …
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The Effects of Water Storage and Meteorological Conditions on Enteric Infections from a Matched-Control Trial in Beira, Mozambique
… and meteorological conditions on enteric infection prevalence and the effectiveness of the PAASIM drinking water intervention. In Aim 1, I evaluated the impact of water contamination, at both the point of collection (PoC) and in water storage containers, on enteric pathogen infections …
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Co-Existence of Urinary Tract Infection and Malaria Among children Under Five Years: A Case of Muhimbili National Hospital Dar es Salaam,Tanzania.
… treat other co-morbidities like urinary tract infections (UTI) and upper respiratory tract infection (URTI) that may coexist with malaria. This cross-sectional study examined coexisting malaria with UTI and further assessed the antimicrobial susceptibility pattern of the isolated organisms …
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Genetic structure and disease prevalence of boreal toads (Bufo boreas) in Glacier National Park
… of 109 toads tested positive for Bd. Infection prevalence was not correlated with elevation, but—surprisingly—increased with individual heterozygosity. This finding suggests that dispersal may be facilitating the spread of disease because heterozygosity is highest where dispersal and …
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Genetic structure and disease prevalence of boreal toads (Bufo boreas) in Glacier National Park
… of 109 toads tested positive for Bd. Infection prevalence was not correlated with elevation, but—surprisingly—increased with individual heterozygosity. This finding suggests that dispersal may be facilitating the spread of disease because heterozygosity is highest where dispersal and …
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Robust Post-donation Blood Screening under Limited Information
… terms of being free of transfusion-transmittable infections, is crucial. While the Food and Drug Administration (FDA) in the United States requires all blood donations to be tested for a set of infections, it does not dictate which particular tests should be used by blood collection centers. …
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Changing Relationship Between Temperature and Pathogen Growth on Bats with White-nose Syndrome
… early hibernation fungal loads and variation in infection prevalence over time, suggesting the onset of a coevolutionary relationship between bats and Pd. This study highlights the importance of investigating changing disease dynamics when understanding the reasonings for host persistence.
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The eco-epidemiology of Chagas disease risk in Panama
… and Eratyrus, and tested specimens for infection with T. cruzi. I examined differences in infection prevalence among species, and found that, while R. pallescens was the most abundant triatomine collected throughout the study, P. geniculatus had significantly higher infection prevalence, …
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Persistence of ranavirus in an East-Central Illinois amphibian community
… concerning environmental effects on disease prevalence or the probability of mortality events. Studies investigating interspecies variation in susceptibility or transmission dynamics have concluded that host species identities strongly influence disease dynamics, however this has not been …
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Studies on Paphies australis (Mesodesmatidae) in Whangārei, Aotearoa New Zealand: an investigation into their declining health.
… new and emerging diseases and opportunistic infections. Wild bivalve molluscs provide economic, ecological, and socio-cultural benefits. Healthy and sustainable kaimoana (shellfish/bivalves, seafood) are intrinsically linked to the wellbeing of many communities in New Zealand. Over the past …
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Inference and Diffusion in Networks
… that uses significantly fewer than N tests when infection prevalence is low. Our approach utilizes network structure to improve the performance of a classical approach called group testing. In the second chapter, we derive the performance of the most common form of group testing, Dorfman testing, …
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Evaluation of the relationships between watershed-scale land use and contaminants in aquatic environments and the use of freshwater snails as indicators of impairment
… of these factors were directly related to the infection prevalence of digenetic trematodes in L. carinata populations. Although trematode infection rates in L. carinata populations do not appear to be viable indicators of the influence of eutrophic conditions on disease incidence in aquatic …
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A study to evaluate immunodiagnostic tests for tuberculosis infection and determinants of TB infection in a population of health care workers in the Western Cape of South Africa
… increased risk of acquiring latent tuberculosis infection (LTBI). The emergence of interferon - gamma release assays (IGRAs) for the diagnosis of LTBI, presents an opportunity for improved estimation of TB infection prevalence and incidence. Their utility in settings with high background …
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Prevalence of Hepatitis B in HIV infected persons: choice of antiretroviral therapy regimen and implications for screening
Limited data and few studies have shown the prevalence of Hepatitis B in the HIV infected population in South Africa, whether these patients are on appropriate antiretroviral therapy and the effect of Hepatitis B on liver function in co-infected persons. The objectives of this study were to …
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The host-pathogen interactions of Chinook Salmon (Oncorhynchus tshawytscha) and the aquatic rhabdoviral pathogen infectious hematopoietic necrosis virus
… This investigation was premised on the high prevalence of IHNV infection in adult CRB Chinook salmon in the absence of disease in juvenile fish. Here, we evaluated field occurrence patterns of IHNV prevalence in Chinook salmon populations and conducted controlled virus exposures to …
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Ecology of Borrelia burgdorferi sensu lato and epidemiology of borrelial infections in Cumbria
… tick populations, but at significantly different prevalences. The annual density of infected ticks varied significantly at all three sites but this variation was asynchronous. Four Borrelia genospecies were encountered in the study, but the relative contribution of each to the borrelial community …
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