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Full-Text Articles in Veterinary Medicine
Investigation Of The Transmission Of Mycobacterium Bovis From Deer To Cattle Through Indirect Contact, Mitchell V. Palmer, W. Ray Waters, Diana L. Whipple
Investigation Of The Transmission Of Mycobacterium Bovis From Deer To Cattle Through Indirect Contact, Mitchell V. Palmer, W. Ray Waters, Diana L. Whipple
Michigan Bovine Tuberculosis Bibliography and Database
Objective—To investigate the infection of calves with Mycobacterium bovis through oral exposure and transmission of M bovis from experimentally infected white-tailed deer to uninfected cattle through indirect contact.
Animals—24 11-month-old, white-tailed deer and 28 6-month-old, crossbred calves.
Procedure—In the oral exposure experiment, doses of 4.3 X 106 CFUs (high dose) or 5 X 103 CFUs (low dose) of M bovis were each administered orally to 4 calves; as positive controls, 2 calves received M bovis (1.7 X 105 CFUs) via tonsillar instillation. Calves were euthanatized and examined 133 days after exposure. Deer-to-cattle transmission was …
Seasonality Of Tuberculosis In India: Is It Real And What Does It Tell Us?, Lorna E. Thorpe, Thomas R. Frieden, Kayla F. Laserson, Charles Wells, Gulshan Khatri
Seasonality Of Tuberculosis In India: Is It Real And What Does It Tell Us?, Lorna E. Thorpe, Thomas R. Frieden, Kayla F. Laserson, Charles Wells, Gulshan Khatri
Michigan Bovine Tuberculosis Bibliography and Database
India has a third of the world’s tuberculosis cases. Large-scale expansion of a national program in 1998 has allowed for population-based analyses of data from tuberculosis registries. We assessed seasonal trends using quarterly reports from districts with stable tuberculosis control programs (population 115 million). In northern India, tuberculosis diagnoses peaked between April and June, and reached a nadir between October and December, whereas no seasonality was reported in the south. Overall, rates of new smear-positive tuberculosis cases were 57 per 100 000 population in peak seasons versus 46 per 100 000 in trough seasons. General health-seeking behavior artifact was ruled …
Michigan Bovine Tuberculosis Eradication Project: 2004 Activities Report And Conference Proceedings
Michigan Bovine Tuberculosis Eradication Project: 2004 Activities Report And Conference Proceedings
Michigan Bovine Tuberculosis Bibliography and Database
On June 9 and 10, 2004, the State of Michigan and U.S. Department of Agriculture hosted the eighth annual Bovine Tuberculosis (TB) Conference, with guest speakers from Georgia, Colorado, Iowa, New York and two Canadian provinces. Our guests came together from across North America to receive policy updates and share the latest scientific data and innovative research on bovine TB.
Among other things, the speakers shared insight on: the promotion of biosecurity; the $30 million annual costs of TB eradication in New Zealand; the latest research in new and improved blood tests; and the first season results of the Michigan …
Tuberculosis, John B. Kaneene, Charles O. Thoen
Tuberculosis, John B. Kaneene, Charles O. Thoen
Michigan Bovine Tuberculosis Bibliography and Database
Tuberculosis is a term that encompasses various diseases caused by bacteria of the Mycobacterium tuberculosis complex, including M tuberculosis, M bovis, M africanum, and other mycobacterial species. Whereas M tuberculosis infection is largely spread from human to human, M bovis infection has been identified as a zoonotic disease with most cases of human infection attributable to animal sources. The mycobacteria other than tuberculosis complex (MOTT), which includes M avium subsp avium and M avium subsp intracellulare isolated from animals, has been isolated from immune-compromised humans (ie, those with human immunodeficiency virus [HIV] infection), but seldom from immunocompetent humans. Recently, …
Estimating The True Prevalence Of Mycobacterium Bovis In Hunter-Harvested White-Tailed Deer In Michigan, Daniel J. O’Brien, Stephen M. Schmitt, Dale E. Berry, Scott D. Fitzgerald, Jolene R. Vanneste, Timothy J. Lyon, Diane Magsig, Jean S. Fierke, Thomas M. Cooley, Laura S. Zwick, Bruce V. Thomsen
Estimating The True Prevalence Of Mycobacterium Bovis In Hunter-Harvested White-Tailed Deer In Michigan, Daniel J. O’Brien, Stephen M. Schmitt, Dale E. Berry, Scott D. Fitzgerald, Jolene R. Vanneste, Timothy J. Lyon, Diane Magsig, Jean S. Fierke, Thomas M. Cooley, Laura S. Zwick, Bruce V. Thomsen
Michigan Bovine Tuberculosis Bibliography and Database
Apparent prevalence, although useful as a consistent index, may underestimate the true prevalence of disease. In Michigan, the ability to estimate the true prevalence of bovine tuberculosis (TB; caused by Mycobacterium bovis) in free-ranging white-tailed deer (Odocoileus virginianus) will become increasingly important to accurately assess progress towards eradication. Our objectives were threefold: to estimate the true prevalence of M. bovis in free-ranging deer in Michigan, to evaluate the effectiveness of existing TB surveillance methods, and to indirectly assess whether TB epidemiologic data from captive cervid herds can be meaningfully extrapolated to free-ranging populations. The study population consisted …
Risk Of Disease From Wildlife Reservoirs: Badgers, Cattle, And Bovine Tuberculosis, M. Scantlebury, M. R. Hutchings, D. J. Allcroft, S. Harris
Risk Of Disease From Wildlife Reservoirs: Badgers, Cattle, And Bovine Tuberculosis, M. Scantlebury, M. R. Hutchings, D. J. Allcroft, S. Harris
Michigan Bovine Tuberculosis Bibliography and Database
Livestock face complex foraging options associated with optimizing nutrient intake while being able to avoid areas posing risk of parasites or disease. Areas of tall nutrient-rich swards around fecal deposits may be attractive for grazing, but might incur fitness costs from parasites. We use the example of dairy cattle and the risks of tuberculosis transmission posed to them by pastures contaminated with badger excreta to examine this trade-off. A risk may be posed either by aerosolized inhalation through investigation or by ingestion via grazing contaminated swards. We quantified the levels of investigation and grazing of 150 dairy cows at badger …
Bovine Tuberculosis (Mycobacterium Bovis) In Wildlife In Spain, Alicia Aranaz, Lucía De Juan, Natalia Montero, Celia Sanchez, Margarita Galka, Consuelo Delso, Julio Alvarez, Beatriz Romero, Javier Bezos, Ana I. Vela, Victor Briones, Ana Mateos, Lucas Domínguez
Bovine Tuberculosis (Mycobacterium Bovis) In Wildlife In Spain, Alicia Aranaz, Lucía De Juan, Natalia Montero, Celia Sanchez, Margarita Galka, Consuelo Delso, Julio Alvarez, Beatriz Romero, Javier Bezos, Ana I. Vela, Victor Briones, Ana Mateos, Lucas Domínguez
Michigan Bovine Tuberculosis Bibliography and Database
Mycobacterium bovis infection in wildlife and feral species is a potential source of infection for livestock and a threat to protected and endangered species. The aim of this study was to identify Spanish wild animal species infected with M. bovis through bacteriological culture and spacer oligonucleotide typing (spoligotyping) of isolates for epidemiological purposes. This study included samples from red deer (Cervus elaphus), fallow deer (Dama dama), wild boar (Sus scrofa), Iberian lynx (Lynx pardina), hare (Lepus europaeus), and cattle (Bos taurus). They were collected in several geographical areas …
Shared Feed As A Means Of Deer-To-Deer Transmission Of Mycobacterium Bovis, Mitchell V. Palmer, W. Ray Waters, Diana L. Whipple
Shared Feed As A Means Of Deer-To-Deer Transmission Of Mycobacterium Bovis, Mitchell V. Palmer, W. Ray Waters, Diana L. Whipple
Michigan Bovine Tuberculosis Bibliography and Database
To determine the ability of experimentally inoculated white-tailed deer (Odocoileus virginianus) to transmit Mycobacterium bovis to naive deer through the sharing of feed, four deer were intratonsillarly inoculated with 4x105 colony-forming units of M. bovis. On a daily basis, feed not consumed by inoculated deer after approximately 8 hr was offered to four naıve deer maintained in a separate pen, where direct contact, aerosol transmission, or transmission through personnel were prevented. After 150 days, naıve deer were euthanized and examined. All naıve deer had lesions consistent with tuberculosis and M. bovis was isolated from various tissues. …
Evaluation Of An In Vitro Blood-Based Assay To Detect Production Of Interferon-Γ By Mycobacterium Bovis–Infected White-Tailed Deer (Odocoileus Virginianus), Mitchell V. Palmer, W. Ray Waters, Diana L. Whipple, Ralph E. Slaughter, Stephen L. Jones
Evaluation Of An In Vitro Blood-Based Assay To Detect Production Of Interferon-Γ By Mycobacterium Bovis–Infected White-Tailed Deer (Odocoileus Virginianus), Mitchell V. Palmer, W. Ray Waters, Diana L. Whipple, Ralph E. Slaughter, Stephen L. Jones
Michigan Bovine Tuberculosis Bibliography and Database
Tuberculosis due to Mycobacterium bovis in captive Cervidae was identified as an important disease in the United States in 1990 and prompted the addition of captive Cervidae to the USDA Uniform Methods and Rules for eradication of bovine tuberculosis. As well, M. bovis infection was identified in free-ranging white-tailed deer in northeast Michigan in 1995. Tuberculosis in both captive and free-ranging Cervidae represents a serious challenge to the eradication of M. bovis infection from the United States. Currently, the only approved antemortem tests for tuberculosis in Cervidae are the intradermal tuberculin skin test and the blood tuberculosis test (BTB). At …
Bovine Tuberculosis In Swedish Farmed Deer: Detection And Control Of The Disease, Helene Wahlström
Bovine Tuberculosis In Swedish Farmed Deer: Detection And Control Of The Disease, Helene Wahlström
Michigan Bovine Tuberculosis Bibliography and Database
Bovine tuberculosis (BTB) was introduced into Swedish farmed deer herds in 1987. Epidemiological investigations showed that 10 deer herds had become infected (July 1994) and a common source of infection, a consignment of 168 imported farmed fallow deer, was identified (I).
As trace-back of all imported and in-contact deer was not possible, a control program, based on tuberculin testing, was implemented in July 1994. As Sweden has been free from BTB since 1958, few practicing veterinarians had experience in tuberculin testing. In this test, result relies on the skill, experience and conscientiousness of the testing veterinarian. Deficiencies in performing the …