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 18 of 18 for “"sylvatic"”.
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Sylvatic dengue: evolution, emergence, and impact on human health
… throughout the world. Transmission includes a sylvatic, enzootic cycle between nonhuman primates and arboreal mosquitoes of the genus Aedes, and an urban, endemic/epidemic cycle between Aedes aegypti, a mosquito with larval development in peridomestic water containers, and human reservoir …
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Mosquito Species Abundance, Diversity and Arbovirus Prevalence across Different Land-use in The Gambia
… prevalence across human, agricultural, and sylvatic habitats in The Gambia, accounting for ecological and seasonal variation. Adult mosquito samples were collected using a BG-Pro and CDC light traps. Larval and egg collections were made using dippers and oviposition cups, respectively. …
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The eco-epidemiology of Chagas disease risk in Panama
… South America. In contrast, we know little about sylvatic transmission, whereby triatomine species living in natural environments are attracted to the human-built environment. This dissertation examines the factors that attract sylvatic vectors to the domestic environment in Panama, which species …
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Discovery and characterization of a newly emerged DENV serotype.
… DENV is maintained in two transmission cycles: a sylvatic cycle between mosquitos and non-human primates (NHP), and an urban cycle between mosquitos and human hosts. The human-endemic lineages of DENV-1-4 each emerged from sylvatic ancestors maintained in a cycle between NHP and arboreal Aedes …
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The transmission ecology of Echinococcus multilocularis in a North American urban landscape
… parasite that is typically maintained in a sylvatic cycle involving wild canid definitive hosts and small mammal intermediate hosts. As etiological agent of Alveolar Echinococcosis in humans, the cestode is currently the third most impacting food-borne parasite globally. Understanding E. …
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Incubation behavior and dispersal patterns in the Mountain Plover (Charadrius montanus)
… looked at the influence of prior experience and sylvatic plague on breeding dispersal in successive years. I also modeled successive nest fate using breeding dispersal distance with sex, previous nest fate, and presence of sylvatic plague as covariates in the model. I found no sex-bias in natal …
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Yellow Fever: Role of Heterologous Flavivirus Immunity on Urban Emergence
… were attributed only to spillover infections via sylvatic mosquito transmission. Despite YF virus (YFV) transmission in major urban centers with insufficient vaccination coverage and abundant populations of the domestic vector, Aedes aegypti, there was no evidence of human-amplified transmission. …
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Helminths of South Dakota Coyotes
… that coyotes play an important role as a sylvatic reservoir for trichinosis in South Dakota The coyote, Canis Latrans, is distributed in many widely varying habitats throughout North America. Because of dissimilarities in the availability of prey species and diversity in environmental …
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<em>Trypanosoma Cruzi</em> in Wild Raccoons and Opossums from Kentucky
… The goal of our study was to determine if the sylvatic cycle of <i>T. cruzi</i> infection occurs in Kentucky, and, if present, to assess the prevalence of infection in Warren and Barren counties. Raccoons and opossums were live-trapped between June and December, 2007. Animals were anesthetized …
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High Diversity of Trypanosoma Cruzi Discrete Typing Units Circulating in Triatoma in Western Mexico
… cruzi</em>, which is transmitted to domestic and sylvatic mammals via the feces of hematophagous hemiptera of the subfamily Triatominae (Reduviidae). <em>Trypanosoma cruzi</em> is found only in the Americas and displays remarkable genetic diversity. Seven discrete typing units (DTUs) are currently …
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The Impact of Powassan Virus and Borrelia burgdorferi Coinfection in Ixodes scapularis Ticks
… effects that could influence their shared sylvatic cycles and to assess the risk of human co-exposure. It was determined that ticks can harbor both pathogens, and that the presence of B. burgdorferi enhances viral replication in the midgut and accelerates dissemination to the salivary …
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Structure-function of Dengue 2 virus envelope protein domain III with neutralizing antibodies
… for both the human endemic and the ancestral, sylvatic DENV-2 rED3s suggesting that these two antigenic sites are evolutionarily conserved. Interestingly, the neutralization efficiency of MAbs that recognized the DENV subcomplex-/complex-specific antigenic site was much lower than MAbs that …
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Characterization of a recombinant chimeric yellow fever 17D vaccine - dengue-4 virus
… 17D prME genes were replaced with those of the sylvatic wild-type DEN-4 strain P75-215, hereafter termed YFV 17D/DENV-4 prME chimera. Viral RNA of 17D vaccine, wild-type DENV-4, and YFV 17D/DENV-4 prME chimera were compared by Next Generation Sequencing (NGS), which indicated that the …
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Impact of climate- and urbanization-driven environmental change on Aedes aegypti susceptibility to Zika virus
… sites for Ae. aegypti natural containers in a sylvatic environment to human-made containers. The bacterial communities found in these different container types are a distinct characteristic determined by the environment and differ between human-made and natural containers. Larval-microbial …
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Neospora Caninum: Oocyst Production in Dogs, Infection of Pregnant Cows With Oocysts, and Transmission Between Wild and Domestic Animals
… alces). These results are consistent with a sylvatic cycle of N. caninum. The expanding populations of coyotes and white-tailed deer throughout North America pose new challenges for the control of neosporosis in domestic animals. Protection of feedstuffs for cattle is recommended, using …
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Three essays on disease, development, and intervention
… ferret and prairie dogs which are susceptible to sylvatic plague outbreaks. While specific results are sensitive to biological and economic parameters, we find a defined switch point between the recommended use of spatial vs. individual disease mitigation interventions based on either a target …
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Burrowing Owl Distribution and Nest Site Selection in Western South Dakota
… to cropland, loss of prairie dog colonies to sylvatic plague (Yersinia pestis) outbreaks and poisoning campaigns, and shooting by recreational prairie dog hunters. Maintaining active prairie dog colonies in open landscapes across western South Dakota is necessary to ensure preferred breeding …
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Cross-protection from St. Louis encephalitis virus and Usutu virus disease by human West Nile virus convalescent plasma in mice
… Typically, these viruses are maintained in a sylvatic cycle involving avian hosts, such as passerine birds, and mosquitoes. However, they can accidentally spill over to humans through mosquito bites or wildlife exposure. Although humans generally remain asymptomatic and do not support …