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Full-Text Articles in Medicine and Health Sciences
The Economics Of Managing Wildlife Disease, Richard D. Horan, Christopher A. Wolf
The Economics Of Managing Wildlife Disease, Richard D. Horan, Christopher A. Wolf
Michigan Bovine Tuberculosis Bibliography and Database
The spread of infectious disease among and between wild and domesticated animals has become a major problem worldwide. Upon analyzing the dynamics of wildlife growth and infection when the diseased animals cannot be identified separately from healthy wildlife prior to the kill, we find that harvest-based strategies alone have no impact on disease transmission. Other controls that directly influence disease transmission and/or mortality are required. Next, we analyze the socially optimal management of infectious wildlife. The model is applied to the problem of bovine tuberculosis among Michigan white-tailed deer, with non-selective harvests and supplemental feeding being the control variables. Using …
Michigan Bovine Tuberculosis Eradication Project: Activities Report 2003, Bridget Patrick
Michigan Bovine Tuberculosis Eradication Project: Activities Report 2003, Bridget Patrick
Michigan Bovine Tuberculosis Bibliography and Database
Bovine tuberculosis (TB) is an infectious bacterial disease and poses a risk to domestic livestock, wildlife and public health in the United States (U.S). In 1917, the U.S. government began a comprehensive national bovine TB eradication program. The disease has been nearly eradicated from livestock in the U.S., but areas of infection resurface periodically. Michigan was declared free of bovine TB in 1975 and received Disease Free status in 1979. In 1975 a free-ranging white-tailed deer in Alcona County was confirmed to be bovine TB positive. It was thought to be an anomaly, and no policy was adopted to look …
Genealogical Relationships Influence The Probability Of Infection With Bovine Tuberculosis And Microgeographic Genetic Structure In Free-Ranging White-Tailed Deer, Julie Anne Blanchong
Genealogical Relationships Influence The Probability Of Infection With Bovine Tuberculosis And Microgeographic Genetic Structure In Free-Ranging White-Tailed Deer, Julie Anne Blanchong
Michigan Bovine Tuberculosis Bibliography and Database
Zoonoses are of increasing importance to wildlife conservation and human health. It has become increasingly recognized that wildlife ecology plays a key role in disease transmission in wildlife populations. In domestic populations, contacts among individuals are controlled by humans and disease transmission is often density dependent. Unlike domestic animals, wildlife populations often have complex social systems in whch contacts among individuals are not solely density dependent, and can play an important role in the transmission and maintenance of disease.
Prevalence Of Chronic Wasting Disease And Bovine Tuberculosis In Free-Ranging Deer And Elk In South Dakota, Christopher N. Jacques, Jonathan A. Jenks, Allen L. Jenny, Steven L. Griffin
Prevalence Of Chronic Wasting Disease And Bovine Tuberculosis In Free-Ranging Deer And Elk In South Dakota, Christopher N. Jacques, Jonathan A. Jenks, Allen L. Jenny, Steven L. Griffin
Michigan Bovine Tuberculosis Bibliography and Database
Heads of hunter-harvested deer and elk were collected throughout South Dakota (USA) and within established chronic wasting disease (CWD) surveillance areas from 1997–2002 to determine infection with CWD and bovine tuberculosis (TB). We used immunohistochemistry to detect CWD-infected individuals among 1,672 deer and elk sampled via geographically targeted surveillance. A total of 537 elk (Cervus elaphus nelsoni), 813 white-tailed deer (Odocoileus virginianus), and 322 mule deer (O. hemionus) was sampled for CWD. Estimated overall prevalence and associated confidence intervals (95%) in white-tailed deer was 0.001% (0–0.007%). Similarly, estimated overall prevalence in elk and mule …
Bovine Tuberculosis In Michigan: Understanding Stakeholder Attitudes Toward The Disease And Eradication Efforts, Meegan Leah Dorn
Bovine Tuberculosis In Michigan: Understanding Stakeholder Attitudes Toward The Disease And Eradication Efforts, Meegan Leah Dorn
Michigan Bovine Tuberculosis Bibliography and Database
Bovine tuberculosis has been discovered at unprecedented levels in Michigan wildlife, especially white-tailed deer (Odocoileus virginianus). Human behaviors, particularly the use of bait and feed, have facilitated the spread of the disease into free-ranging white-tailed deer populations. Policies aimed at eradicating bovine tuberculosis in Michigan require public compliance and cooperation in order to be successful. Because of the human contribution to the spread of bovine tuberculosis in Michigan wildlife, and the social nature of subsequent bovine tuberculosis eradication policies, we conducted a survey of bovine TB issue stakeholder groups in northeast Michigan, including non-resident hunters, resident hunters, livestock …
Are There “Hot Spots” Of Bovine Tuberculosis In The Free-Ranging White-Tailed Deer (Odocoileus Virginianus) Herd Of Northeastern Michigan?, Brandi Danielle Hughey
Are There “Hot Spots” Of Bovine Tuberculosis In The Free-Ranging White-Tailed Deer (Odocoileus Virginianus) Herd Of Northeastern Michigan?, Brandi Danielle Hughey
Michigan Bovine Tuberculosis Bibliography and Database
This project looks at whether high case frequency areas or “hot spots” of bovine tuberculosis (tb) exist in free ranging white-tailed deer in northeastern Michigan, and examines the factors associated with them. Michigan Department of Natural Resources researchers have been collecting deer heads annually since 1996 in the five county area of Alcona, Alpena, Montmorency, Oscoda, and Presque Isle as part of an effort to manage an outbreak of bovine tb in the wild white-tailed deer population. From these heads a database containing age, sex, and harvest or collection location information was constructed. The townships within these five counties were …
Bovine Tuberculosis In Elk (Cervus Elaphus Manitobensis) Near Riding Mountain National Park, Manitoba, From 1992 To 2002
Michigan Bovine Tuberculosis Bibliography and Database
From 1991 to April 2003, outbreaks of bovine tuberculosis (TB caused by Mycobacterium bovis) have been found in 11 cattle herds surrounding Riding Mountain National Park (RMNP). Located in southwestern Manitoba, RMNP and the surrounding area are home to a free-ranging herd of 2500 to 4000 elk that have been implicated as being a wildlife reservoir of M. bovis infection. Indirect contact between cattle and elk that feed during the winter on the same large, round hay bales is presumed to be the most likely mode of transmission between the species (1).
Mycobacterial Diseases In Wildlife, Gary W. Witmer, Thomas J. Deliberto, Kurt C. Vercauteren, Peter Butchko
Mycobacterial Diseases In Wildlife, Gary W. Witmer, Thomas J. Deliberto, Kurt C. Vercauteren, Peter Butchko
Michigan Bovine Tuberculosis Bibliography and Database
Mycobacterium infections occur in numerous wildlife species worldwide and this bacterial genus can also cause disease in humans and livestock. Two Mycobacterium species and one subspecies that infect wildlife are important from a wildlife damage management perspective. Mycobacterium avium, avian tuberculosis, is a ubiquitous and cosmopolitan disease of wild and domestic birds. Wild and domestic ruminants are host to M. avium paratuberculosis, also known as Johne’s disease. Finally, Mycobaterium bovis, bovine tuberculosis, is primarily associated with domestic and wild bovines and ungulates, but also infects many other species of mammals. Eradicating these diseases from wildlife populations is …
Feral Swine - Are They A Disease Threat To Livestock In The United States?, Gary W. Witmer, Robert B. Sanders, Arnold C. Taft
Feral Swine - Are They A Disease Threat To Livestock In The United States?, Gary W. Witmer, Robert B. Sanders, Arnold C. Taft
Michigan Bovine Tuberculosis Bibliography and Database
Feral swine populations provide both benefits and liabilities to citizens of the United States. Their expanding range and increasing densities, however, have raised concern over the adverse environmental and agricultural effects and the increased risk of disease transmission between feral swine and livestock. We discuss the role of feral swine in the transmission of wildlife diseases and, in particular, in diseases of national significance to the livestock industry. We also discuss available management tools and strategies for reducing feral swine populations, minimizing damage or disease occurrences and eradicating populations when deemed appropriate. Finally, we note areas of research that may …
The Risk Of Disease Transmission To Livestock Posed By Contamination Of Farm Stored Feed By Wildlife Excreta, M. J. Daniels, M. R. Hutchings, A. Greig
The Risk Of Disease Transmission To Livestock Posed By Contamination Of Farm Stored Feed By Wildlife Excreta, M. J. Daniels, M. R. Hutchings, A. Greig
Michigan Bovine Tuberculosis Bibliography and Database
Livestock feed is susceptible to contamination from wildlife excreta during on farm storage. Pathogens associated with diseases such as paratuberculosis, salmonella and cryptosporidiosis are present in wild rodent and bird excreta. Feed stores on four farms in the east of Scotland were monitored monthly over the winter of 1998/9 to quantify the levels of wildlife faecal contamination. A mean of 79.9 rodent (95% confidence interval: 37.5–165.9) and 24.9 (14.3–41.7) bird faeces were deposited per m2 of stored feed per month. It was estimated that individual cattle and sheep could encounter 1626 and 814 wildlife faeces over the winter.
A …
Spatial And Temporal Spread Of Bovine Tuberculosis In Wild White-Tailed Deer In Michigan, Graham J. Hickling, Stephen M. Schmitt, Daniel J. O'Brien
Spatial And Temporal Spread Of Bovine Tuberculosis In Wild White-Tailed Deer In Michigan, Graham J. Hickling, Stephen M. Schmitt, Daniel J. O'Brien
Michigan Bovine Tuberculosis Bibliography and Database
In 1975, a wild white-tailed deer infected with bovine tuberculosis was shot in the northeastern Lower Peninsula, Michigan. The shooting of a second infected deer in the same area in 1994 triggered ongoing disease surveillance in the region. By 2002, bovine tuberculosis had been confirmed in 12 Michigan counties: from 449 deer; two elk; 41 non-cervid wildlife; one captive cervid facility and 28 cattle herds. We analyzed geographic spread of disease since the surveillance began and investigated factors influencing the prevalence of disease within the infected area. These analyses reveal that 78 percent of tuberculous deer came from within a …
Aerosol Exposure Of White-Tailed Deer (Odocoileus Virginianus) To Mycobacterium Bovis, Mitchell V. Palmer, W. Ray Waters, Diana L. Whipple
Aerosol Exposure Of White-Tailed Deer (Odocoileus Virginianus) To Mycobacterium Bovis, Mitchell V. Palmer, W. Ray Waters, Diana L. Whipple
Michigan Bovine Tuberculosis Bibliography and Database
Tuberculosis due to Mycobacterium bovis affects both captive and free-ranging Cervidae in the United States. Various animal models have been developed to study tuberculosis of both humans and animals. Generally, tuberculosis is transmitted by aerosol and oral routes. Models of aerosol exposure of large animals to M. bovis are uncommon. In order to develop a reliable method of aerosol exposure of white-tailed deer (Odocoileus virginianus) to M. bovis, 12 healthy white-tailed deer, aged 8–10 mo, were infected by aerosol exposure to 2x105 to 1x106 colony forming units (CFU) (high dose, n=4) of M. bovis or …
Mycobacterial Diseases In Wildlife, Gary Witmer, Thomas J. Deliberto, Kurt C. Vercauteren, Peter Butchko
Mycobacterial Diseases In Wildlife, Gary Witmer, Thomas J. Deliberto, Kurt C. Vercauteren, Peter Butchko
Michigan Bovine Tuberculosis Bibliography and Database
Mycobacterium infections occur in numerous wildlife species worldwide and this bacterial genus can also cause disease in humans and livestock. Two Mycobacterium species and one subspecies that infect wildlife are important from a wildlife damage management perspective. Mycobacterium avium, avian tuberculosis, is a ubiquitous and cosmopolitan disease of wild and domestic birds. Wild and domestic ruminants are host to M. avium paratuberculosis, also known as Johne’s disease. Finally, Mycobaterium bovis, bovine tuberculosis, is primarily associated with domestic and wild bovines and ungulates, but also infects many other species of mammals. Eradicating these diseases from wildlife populations is …