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Title:   Author  item
                                            Palmer, Mitchell
  Submitted to: Meeting Abstract
                                    Publication Type: Abstract Only
                                    Publication Acceptance Date: 7/8/2007
                                    Publication  Date: 7/8/2007
                                    Citation: Palmer, M.V. 2007. Tuberculosis:  a Re-emerging Disease at the Interface of Domestic Animals and Wildlife [abstract]. 111th Annual Meeting of the United States Animal Health Association. p. 672.Interpretive Summary:
                                Technical Abstract: In the early 20th century there were large numbers of tuberculous cattle in many countries. An association was made between the number of M. bovis infected humans and the prevalence of tuberculosis in cattle. Mandatory pasteurization of milk caused the prevalence of human tuberculosis due to M. bovis to decline in developed countries. In some countries eradication has been prevented by several factors not least of which is the presence of a wildlife reservoir of M. bovis. In Great Britain evidence suggests that M. bovis is endemic among badgers (Meles meles), and that tuberculous badgers are the source of infection for cattle. In New Zealand, brushtail possums (Trichosurus vulpecula), first taken to New Zealand in the mid-19th century now occupy over 90% of New Zealand’s land mass and serve as a source of M. bovis for domestic livestock. In Michigan, USA free-ranging white-tailed deer (Odocoileus virginianus) represent the first reservoir of M. bovis in free-living wildlife in the United States. Deer to cattle transmission of M. bovis has been documented. Wildlife reservoirs of M. bovis represent a serious challenge to the eradication of M. bovis. The presence of wildlife reservoirs is the direct result of spill-over of M. bovis from domestic livestock and efforts to eradicate M. bovis from domestic livestock are impeded by spill-back from wildlife reservoirs. The test and slaughter policies of tuberculosis control, effectively used with livestock, are insufficient where wildlife reservoirs exist. It will not be possible to eradicate M. bovis from livestock until transmission between wildlife and domestic animals is halted. Such an endeavor will require a collaborative effort between agricultural, wildlife, environmental and political interests.


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