Publications

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mycobacterium bovis infection in north american elk (cervus elaphus).a naturally occurring outbreak of mycobacterium bovis infection in captive wild elk (wapiti) in montana was confirmed by mycobacteriologic examination. twenty-eight of 143 elk responded to m. bovis purified protein derivative (ppd) tuberculin injected intradermally in the cervical region (sct). the results of comparative cervical tuberculin skin tests conducted within 9 days of sct revealed greater responses to m. bovis ppd tuberculin than to m. avium ppd tuberculin in 23 of 28 elk responding. a ...19921457545
gross and microscopic lesions of naturally occurring tuberculosis in a captive herd of wapiti (cervus elaphus nelsoni) in colorado.a mycobacterium bovis-infected herd of captive wapiti (cervus elaphus nelsoni) in colorado was depopulated after lesions of bovine tuberculosis were confirmed in 8 of 10 tuberculin skin test reactors. of the 43 animals > 1 year of age, 26 had gross lesions suggestive of tuberculosis, 24 had microscopic lesions of tuberculosis, and 23 had acid-fast bacilli associated with the lesions. lungs and retropharyngeal lymph nodes were the most frequently affected sites. most lesions grossly and microscop ...19921457546
observations on animal and human health during the outbreak of mycobacterium bovis in game farm wapiti in alberta.this report describes and discusses the history, clinical, pathologic, epidemiologic, and human health aspects of an outbreak of mycobacterium bovis infection in domestic wapiti in alberta between 1990 and 1993, shortly after legislative changes allowing game farming. the extent and seriousness of the outbreak of m. bovis in wapiti in alberta was not fully known at its onset. the clinical findings in the first recognized infected wapiti are presented and the postmortem records for the herd in wh ...199910065319
wildlife reservoirs for bovine tuberculosis (mycobacterium bovis) in canada: strategies for management and research.in canada, there are two known regional foci where wildlife populations are infected with bovine tuberculosis (mycobacterium bovis) and considered to be disease reservoirs. free-ranging populations of wood bison (bison bison athabascae) in and around wood buffalo national park (wbnp) and wapiti (cervus elaphus manitobensis) in and around riding mountain national park (rmnp) are infected with bovine tuberculosis. in this paper, we provide an overview of these diseased wild ungulate populations an ...200616343817
the existing and potential importance of brucellosis and tuberculosis in canadian wildlife: a review.as the campaign to eradicate bovine brucellosis (brucella abortus) and tuberculosis (mycobacterium bovis) in canadian livestock nears completion, the importance of extraneous sources of these diseases increases. this review summarizes the literature on brucellosis and tuberculosis in canadian wildlife species to determine existing and potential hosts. canadian caribou (rangifer tarandus) are reservoirs of brucella suis biotype 4 which is pathogenic in caribou, humans and muskoxen but reportedly ...198617422637
juxtaposition between host population structures: implications for disease transmission in a sympatric cervid community.sympatric populations of phylogenetically related species are often vulnerable to similar communicable diseases. although some host populations may exhibit spatial structure, other hosts within the community may have unstructured populations. thus, individuals from unstructured host populations may act as interspecific vectors among discrete subpopulations of sympatric alternate hosts. we used a cervid-bovine tuberculosis (mycobacterium bovis) system to investigate the landscape-scale potential ...201324187583
targeting hunter distribution based on host resource selection and kill sites to manage disease risk.endemic and emerging diseases are rarely uniform in their spatial distribution or prevalence among cohorts of wildlife. spatial models that quantify risk-driven differences in resource selection and hunter mortality of animals at fine spatial scales can assist disease management by identifying high-risk areas and individuals. we used resource selection functions (rsfs) and selection ratios (srs) to quantify sex- and age-specific resource selection patterns of collared (n = 67) and hunter-killed ...201324324876
isolation of mycobacterium bovis from free-ranging wildlife in south korea.we demonstrate mycobacterium bovis infection in wild boar ( sus scrofa ) in south korea. during 2012-15, we attempted to isolate m. bovis from 847 wild animals, mainly korean water deer ( hydropotes inermis argyropus), raccoon dogs ( nyctereutes procyonoides ), and wild boar, from 11 regions in south korea. we isolated m. bovis from three of 118 wild boar (2.5%) captured in gyeonggi province, where bovine tuberculosis (btb) outbreaks have also occurred in livestock. spoligotypes and mycobacteria ...201727809648
modeling and mitigating winter hay bale damage by elk in a low prevalence bovine tuberculosis endemic zone.wildlife causes extensive crop damage throughout much of north america and these shared feeds are a key risk factor in the transmission of diseases between wildlife and livestock, including bovine tuberculosis (tb). predicting wildlife use of agricultural crops can provide insight directed toward targeted disease mitigation at areas of potential indirect interaction. in this study, we quantified use of hay bales by elk (cervus canadensis) during the winter in southwestern manitoba, canada using ...201424486094
field evaluation of three blood-based assays for elk (cervus canadensis) naturally infected with mycobacterium bovis.diagnosis of mycobacterium bovis in wild populations is very challenging due to complications imposed by the use of traditional skin tests, poor sensitivity of gold standard tests which rely on culture of m. bovis from tissues and wide variations in severity of disease. various combinations of a lymphocyte stimulation test (lst), fluorescence polarization assay (fpa) and the cervid tb stat-pak were evaluated using two different validation approaches: a latent class analysis and classical statist ...201424315383
surveillance for mycobacterium bovis transmission from domestic cattle to wild ruminants in a mexican wildlife-livestock interface area.to assess the prevalence of mycobacterium bovis infection in cattle and wild ruminants (wrs) in a wildlife-livestock interface area (wlia) of the mexican highland plateau.201223013189
using white-tailed deer (odocoileus virginianus) in infectious disease research.between 1940 and 2004, more than 335 emerging infectious disease events were reported in the scientific literature. the majority (60%) of these events involved zoonoses, most of which (72%) were of wildlife origin or had an epidemiologically important wildlife host. because this trend of increasing emerging diseases likely will continue, understanding the pathogenesis, transmission, and diagnosis of these diseases in the relevant wildlife host is paramount. achieving this goal often requires usi ...201728724483
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