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Dissertations / Theses on the topic 'Degree of infection'

Author: Grafiati

Published: 7 June 2025

Last updated: 2 August 2025

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1

Siddiqui, Sameeha Qaiser. "Backward bifurcation in SIR endemic models : this thesis is presented in partial fulfillment of the requirements for the degree of Masters of Information Science in Mathematics at Massey University, Albany, Auckland, New Zealand." Massey University, 2008. http://hdl.handle.net/10179/929.

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In the well known SIR endemic model, the infection-free steady state is globally stable for R0 < 1 and unstable for R0 > 1. Hence, we have a forward bifurcation when R0 = 1. When R0 > 1, an asymptotically stable endemic steady state exists. The basic reproduction number R0 is the main threshold bifurcation parameter used to determine the stability of steady states of SIR endemic models. In this thesis we study extensions of the SIR endemic model for which a backward bifurcation may occur at R0 = 1. We investigate the biologically reasonable conditions for the change of stability. We also analy

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2

Benschop, Jacqueline. "Epidemiological investigations of surveillance strategies of zoonotic Salmonella : a dissertation presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy at Massey University." Massey University, 2009. http://hdl.handle.net/10179/1025.

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This thesis is concerned with the application of recently developed epidemiological and statistical tools to inform the optimisation of a national surveillance strategy of considerable importance to human health. The results of a series of epidemiological investigations of surveillance strategies for zoonotic Salmonella are presented. Salmonella are one of the most common and serious zoonotic foodborne pathogenic bacteria globally. These studies were motivated by the increasing focus on the cost-effectiveness of surveillance while maintaining consumer confidence in food supply. Although data f

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3

Hill, Andrew Gordon. "An investigation of Leucocytozoon in the endangered yellow-eyed penguin (Megadyptes antipodes) : a thesis presented in partial fulfilment of the requirements for the degree of Master of Veterinary Science at Massey University, Turitea, Palmerston North, New Zealand." Massey University, 2008. http://hdl.handle.net/10179/1063.

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Yellow-eyed penguins have suffered major population declines and periodic mass mortality without an established cause. On Stewart Island a high incidence of regional chick mortality was associated with infection by a novel Leucocytozoon sp. The prevalence, structure and molecular characteristics of this leucocytozoon sp. were examined in the 2006-07 breeding season. In 2006-07, 100% of chicks (n=32) on the Anglem coast of Stewart Island died prior to fledging. Neonates showed poor growth and died acutely at approximately 10 days old. Clinical signs in older chicks up to 108 days included anaem

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4

Jowitt, Deborah Mary. "The H-bug epidemic the impact of antibiotic-resistant staphylococcal infection on New Zealand society and health 1955-1963 : a thesis presented in partial fulfillment of the requirements for the degree of Masters of Health Science (Midwifery), Auckland University of Technology, 2004." Full thesis. Abstract, 2004.

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5

Lukong, Paul Foka. "The integration of geospatial data into the surveillance and management of HIV/AIDS in Cameroon : thesis submitted for the degree of Doctor of Philosophy /." Title page, table of contents and abstract only, 2004. http://web4.library.adelaide.edu.au/theses/09PH/09phl9549.pdf.

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6

Chia, Brian Cheng San. "Amphibian antimicrobial peptides : their structures and mechanisms of action : a thesis presented for the degree of Doctor of Philosophy." Title page, contents and abstract only, 2000. http://web4.library.adelaide.edu.au/theses/09PH/09phc532.pdf.

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Copy of author's previously published works inserted. Bibliography: leaves 183-220. Three antimicrobial peptides, maculatin 1.1, uperin 3.6 and caerin 4.1 have been isolated from the respective skin glands of the Australian amphibians Litoria genimaculata, Uperoleia mjobergii and Litoria caerulea. To gain a deeper insight into their mechanisms of action, three dimensional structural studies have been conducted using circular dichroism, two-dimensional nuclear resonance and computer modelling techniques. The role of central flexibility within antibiotic peptides in their interaction with bacter

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7

Wabnitz, Paul Andrew. "Chemistry and medical implications of novel amphibian peptides : a thesis submitted for the degree of Doctor of Philosophy /." Title page, contents and abstract only, 1999. http://web4.library.adelaide.edu.au/theses/09PH/09phw112.pdf.

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8

Díaz, Patricia I. "Studies on the oxidative stress response of porphyromonas gingivalis : a thesis submitted in fulfillment of the requirements for admission to the degree of Doctor of Philosophy /." Title page, summary and table of contents only, 2002. http://web4.library.adelaide.edu.au/theses/09PH/09phd5426.pdf.

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9

Waetford, Cathrine Huhana. "The knowledge, attitudes and behaviour of young Māori women in relation to sexual health a descriptive qualitative study : a thesis submitted to Auckland University of Technology in partial fulfilment of the requirements for the degree of Master of Health Science, 2008 /." Click here to access this resource online, 2008. http://hdl.handle.net/10292/412.

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10

Ete-Rasch, Elaine. "'I thought it was just a pimple' : a study examining the parents of Pacific children's understanding and management of skin infections in the home ; a thesis submitted to the Victoria University of Wellington in partial fulfilment of the requirements for the degree of Master of Arts (Applied) in Nursing /." ResearchArchive@Victoria e-thesis, 2009. http://hdl.handle.net/10063/1237.

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11

Belarbi-Halli, Rosa. "Ultrastructure du pneumatode. Son rôle dans la fusariose du palmier dattier : Relations hote-parasite." Nancy 1, 1986. http://www.theses.fr/1986NAN10111.

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L'inoculation de la variété sensible au niveau de la racine principale ou sur un pneumatode, montre que l'infection a lieu au bout de quelques jours, seulement dans le second cas, le F. O. A. Est présent dans l'aérenchyme ou il adhère intimement aux parois, aux verrues et à la substance du meat. La variété résistante B. S. T. N. Possède, au niveau du pneumatode, des caractéristiques anatomiques et cytologiques qui la distinguent de la variété sensible. Le F. O. A. Ne dépasse pas l'aérenchyme. La variété résistante T. K. T. , en terrain infesté montre une forte similitude avec B. S. T. N. Conta

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12

Marmor, Alexandra Mary. "Thesis Submitted for the Degree of Master of Philosophy in Applied Epidemiology." Master's thesis, 2017. http://hdl.handle.net/1885/141155.

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My field placement for Master of Philosophy in Applied Epidemiology (MAE) program was with the Indigenous Health Division of the Australian Government Department of Health, and it provided opportunities for epidemiological training in a broad range of contexts. I present four projects to fulfil the core requirements of the MAE. I participated in a retrospective investigation into cases of carbapenemase-producing Enterobacteriaceae (CPE) identified over a four year period in the Australian Capital Territory. In this investigation I collecte

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13

Hui-Lan, Hsia, and 夏蕙蘭. "Analysis of the Various Degree of White Spot Syndrome Virus (WSSV) Infection on Penaeus monodon Brooders Before and After Spawning." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/50115088318296334338.

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博士<br>國立臺灣大學<br>動物學研究所<br>92<br>英文摘要 In this paper, there were two purposes in this paper, the first study was to analysis that co-infection of WSSV and IHHNV in Penaeus monodon. The second study was to assess accurately the WSSV DNA load after spawning by real-time PCR. The detections of WSSV and IHHNV respectively in P. monodon brooders before and after spawning were by dot blot hybridization and single-step nested WSSV PCR. The data showed that for WSSV, the stress of spawning triggered replication of the virus. The replication rate of the virus were very fast after sp

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14

Doezema, Mary B. "A comparison of expectant vs. active management of premature rupture of membranes at term in a nurse midwifery service a report submitted in partial fulfillment ... for the degree of Master of Science, Nurse-Midwifery Track, Parent-Child Nursing ... /." 1995. http://catalog.hathitrust.org/api/volumes/oclc/68798798.html.

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15

Subharat, Supatsak. "Epidemiology, diagnosis and vaccination control of leptospirosis in farmed deer in New Zealand : a thesis presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy in Veterinary Clinical Science at Massey University, Palmerston North, New Zealand." 2010. http://hdl.handle.net/10179/1678.

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Leptospirosis is a bacterial zoonotic disease of global importance. It is caused by infection with pathogenic Leptopsira species. Leptospirosis encompasses a wide spectrum of clinical or subclinical disease in both humans and animals. In New Zealand (NZ), leptospirosis is considered to be the most important occupational zoonosis. Livestock farming plays an important role as a major occupational risk factor for human leptospirosis and farmed deer is one of the contributing factors. Commercial farming of deer began in NZ in the early 1970s. It remains the world’s largest and most advanced deer f

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16

Boyer, Anne-Sophie. "Microbial infection of avian eggs : a threat to all synchronously incubating species? Case study of New Zealand's little blue penguin (Eudyptula minor) : a thesis presented in partial fulfilment of the requirements for the degree of Master of Science in Conservation Biology at Massey University, Auckland, New Zealand." 2010. http://hdl.handle.net/10179/1365.

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Microbial infection of eggs was originally investigated in terms of human health only. Recently, however, it was found that it can also cause early embryo mortality in birds, mainly through trans-shell infection prior to incubation. Trans-shell infection is highly dependent upon environmental conditions, egg temperature and egg properties such as shell quality and antimicrobial defences. Microbial infection of eggs is more likely to occur in synchronously incubating species as first laid eggs can be exposed for up to several days prior to full incubation. One example of a population that seems

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17

Bermingham, Emma Natasha. "The metabolic cost of an intestinal parasite infection on amino acid kinetics in sheep fed fresh forages: a thesis presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy in Animal Science at Massey University, Palmerston North, New Zealand." 2004. http://hdl.handle.net/10179/1743.

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There is mounting evidence that parasitic infections change nutrient utilisation within the tissues, and that this is responsible for the reduction in animal performance that has been observed. Feeding forages that contain condensed tannins (CT) are thought to alleviate the impact of parasite infection on amino acid (AA) and protein metabolism by improving protein supply post-ruminally. However, there has been no quantification of how nutrients are partitioned in the lamb fed fresh forages during a parasitic infection. Therefore, the objective of this study was to quantify the partitioning of

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18

Xie, Z. "Modelling genetic regulatory networks : a new model for circadian rhythms in Drosophila and investigation of genetic noise in a viral infection process : a thesis submitted in partial fulfilment of the requirements for the degree of Doctor of Philosophy in Computational Systems Biology at Lincoln University, New Zealand /." Diss., 2007. http://hdl.handle.net/10182/31.

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19

Kwon, Jun-Wook. "Modeling the impacts of an anti-HIV drug treatment program on the HIV epidemic a dissertation submitted in partial fulfillment ... for the degree of Doctor of Public Health (Epidemiology) ... /." 1997. http://catalog.hathitrust.org/api/volumes/oclc/68800665.html.

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20

Massey, Jeffrey Paul. "Vertical transmission of Human Immunodeficiency Virus Type I a dissertation submitted in partial fulfillment ... for the degree of Doctor of Public Health (Hospital and Molecular Epidemiology) ... /." 1993. http://books.google.com/books?id=eEBBAAAAMAAJ.

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21

Díaz, Patricia I. "Studies on the oxidative stress response of porphyromonas gingivalis : a thesis submitted in fulfillment of the requirements for admission to the degree of Doctor of Philosophy." 2002. http://web4.library.adelaide.edu.au/theses/09PH/09phd5426.pdf.

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22

Martens, Melissa L. "Educating adolescents on HIV/AIDS recommendations from an exemplary evaluation : a report submitted in partial fulfillment ... for the degree of Master of Science, Parent-Child Nursing ... /." 1996. http://catalog.hathitrust.org/api/volumes/oclc/68798769.html.

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23

Pao, Cheng Hsu, and 徐保誠. "The Relationship between Degree of Infectious Value and Willingness of Purchase - A Case Study of G Community." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/58888979122036545785.

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碩士<br>國立臺南大學<br>經營與管理學系科技管理碩士在職專班<br>105<br>This study explores the relationship between perceived value and purchase intention of silver-haired family's purchase of health food. And in the gender, age and education level of the degree of involvement, perceived value of the difference will have an impact on the purchase intention. In this study, we sampled the questionnaire, and the sample was limited to silver-haired people aged over 65 in the G. village, Yongkang District, Tainan City. A questionnaire interview was conducted one for one from August 2016 to February 2017. There were 12 respon

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24

Reed, Susan Gayle. "Oral Chlamydia trachomatis in a dental clinic population with established periodontitis a dissertation submitted in partial fulfillment ... for the degree of Doctor of Public Health (Dental Public Health) ... /." 1996. http://books.google.com/books?id=ECsoAAAAMAAJ.

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25

Torrado, Egídio. "Cellular immune response to experimental infections with mycobacteria with different degrees of virulence : development of new preventive strategies." Doctoral thesis, 2007. http://hdl.handle.net/1822/7083.

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Tese de doutoramento em Ciências da Saúde – Ciências Biológicas e Biomédicas.<br>Mycobacterium ulcerans is the etiological agent of Buruli ulcer (BU), a serious tropical, necrotizing skin disease that can cause terrible deformities and disabilities if not treated at early stages. This pathogen was first identified in 1948 by MacCallum and colleagues in Australia; however, until the last decade, BU has received little attention from the scientific community. BU affects mainly rural and poor communities in Africa. Different control measures have been suggested, however, associated with BU,

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26

Wabnitz, Paul Andrew. "Chemistry and medical implications of novel amphibian peptides : a thesis submitted for the degree of Doctor of Philosophy / by Paul Andrew Wabnitz." Thesis, 1999. http://hdl.handle.net/2440/19494.

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Copies of author's previously published articles inserted.<br>Includes bibliographical references.<br>xv, 210 leaves : ill. ; 30 cm.<br>A chemical and pharmacological investigation of compounds derived from amphibian skin. Isolates novel amphibian peptides and further investigates the biological activity of some of the peptides discovered.<br>Thesis (Ph.D.)--University of Adelaide, Dept. of Chemistry, 2000

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27

Lukong, P. F. "The integration of geospatial data into the surveillance and management of HIV/AIDS in Cameroon : thesis submitted for the degree of Doctor of Philosophy / Paul Foka Lukong." 2004. http://hdl.handle.net/2440/22102.

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"May 2004"<br>Includes bibliographical references (leaves 243-270)<br>xviii, 270 leaves : ill. (some col.), maps ; 30 cm.<br>Title page, contents and abstract only. The complete thesis in print form is available from the University Library.<br>Thesis (Ph.D.)--University of Adelaide, School of Social Sciences, Discipline of Geographical and Environmental Studies, 2004

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28

Porter, Leila Andrea. "Factors associated with consistent condom use as reported by sexually active female adolescents a research report submitted in partial fulfillment ... for the degree of Master of Science (Parent-Child Nursing) ... /." 1996. http://catalog.hathitrust.org/api/volumes/oclc/68798766.html.

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29

Bovonsantijid, Yaowaluk. "Microbial infections and elevated PGE2 as risk indicators of adult periodontitis a dissertation submitted in partial fulfillment ... for the degree of Doctor of Public Health (Oral Epidemiology) ... /." 1997. http://catalog.hathitrust.org/api/volumes/oclc/68800668.html.

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30

Mann, Joanne L. "Modelling infectious disease epidemiology and vaccination impact : a thesis presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy in Mathematics at Massey University, Albany, New Zealand." 2009. http://hdl.handle.net/10179/1085.

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This thesis presents mathematical models for the dynamics of vaccine preventable diseases, specifically looking at the New Zealand situation. Through the use of integral and differential equations, we develop models and compare the results of these to known data. Using game theory analysis we determine and compare the proportion of the population that needs to be vaccinated in order to minimise the expected costs to the individuals in the population and to the community. Two different scenarios and methods are considered, where the effects of vaccination last only one epidemic cycle (using an

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31

Lockhart, Caryl Yolanda. "Surveillance for diseases of poultry with specific reference to avian influenza : a dissertation presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy at Massey University." 2008. http://hdl.handle.net/10179/813.

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This thesis addresses issues related to surveillance for disease in commercial and non-commercial poultry populations. The motivation for this work has largely arisen from the unprecedented outbreaks of highly pathogenic avian influenza (HPAI) H5N1 that have occurred in 52 countries in Asia, Africa and Europe since 2003. A series of studies are presented using data derived from two countries, Vietnam and New Zealand. The two Vietnamese studies provide in-depth epidemiological analyses of the outbreak of HPAI H5N1 from December 2003 to March 2004. The three New Zealand studies deal with issues

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32

Stasiuk, Susan Josephine. "Functional analysis of the insulin/IGF signalling pathway and the infective larva developmental switch in Parastrongyloides trichosuri : a thesis presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy in Molecular Genetics at Massey University, Palmerston North, New Zealand." 2010. http://hdl.handle.net/10179/1485.

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Parasitism, in nematodes, is a very successful life strategy which has evolved throughout the Nematoda phylum in several independent events. However, the genetic basis for parasitism remains unknown. Parastrongyloides trichosuri is a facultative parasitic nematode of the Australian brushtail possum. This parasite has retained the unusual ability to sample its environment at each generation, and make the developmental decision to develop either into a free-living nematode or, in response to environmental stress, develop into an infective larva, which must then seek out a host in order to comple

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33

Hale, Katrina A. "Population bottlenecks and the risk of parasitic and microbiological infections in the endangered saddleback (Philesturnus carunculatus) and South Island robin (Petroica a. australis) : a thesis submitted in partial fulfilment of the requirements for the degree of Doctor of Philosophy in Biological Sciences in the University of Canterbury /." 2007. http://library.canterbury.ac.nz/etd/adt-NZCU20070402.154412.

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