NR AXYA
AU Tyshenko,M.G.; Leiss,W.; Al-Zoughool,M.; Darshan,S.; Krewski,D.
TI Risk Communication and Risk Management of "Born After Feed Ban" Bovine Spongiform Encephalopathy Cattle in Canada
QU International Conference - Prion 2007 (26.-28.9.2007) Edinburgh International Conference Centre, Edinburgh, Scotland, UK - Book of Abstracts: Epidemiology, Risk Assessment and Transmission P04.45
IA http://www.prion2007.com/pdf/Prion Book of Abstracts.pdf
PT Konferenz-Poster
AB In Canada a partial feed ban was introduced in 1997. Scientific research had determined that the incubation period for bovine spongiform encephalopathy (BSE) by oral consumption was, on average, five years. As a result it was projected that the number of BSE cases would peak approximately five years later in 2002-2003. The number of infected cattle remaining in the herd after this time was predicted to be very small as many would have already been culled, slaughtered or died. With little risk communication or other options most farmers continued to use contaminated feed until it was consumed. This situation extended the potential for infectivity and a small number of additional BSE cases were expected after the feed ban. A number of possible transmission routes for contaminating prions are known but on-farm crosscontamination is thought to be the primary source of exposure. Devastating economic losses occurred when Canada detected its first domestic BSE case in May 2003 and each additional positive case born after the feed ban only reinforces the perception of BSE risk in Canada. The small numbers of BSE cases born well after the feed ban (five years) may have been avoided or reduced with simple interventions and improved risk communication to farmers when the initial partial feed ban was introduced. Continued detection of BSE cattle born after the feed ban requires risk communication to the public to explain why cases are still appearing. Effective risk communication will help maintain the public's confidence in government and the Canadian beef industry.
AD M.G. Tyshenko, W. Leiss, M. Al-Zoughool, S. Darshan, D. Krewski, University of Ottawa, McLaughlin Centre, Canada
SP englisch
PO Schottland