NR ATDH
AU Krumm,C.E.; Conner,M.M.; Miller,M.W.
TI Relative vulnerability of chronic wasting disease infected mule deer to vehicle collisions
QU Journal of Wildlife Diseases 2005 Jul; 41(3): 503-11
IA http://www.cwd.cc/RELATIVE%20VULNERABILITY%20OF%20CWD%20INFECTED%20MULE%20DEER%20TO%20VEHICLE%20COLLISIONS.pdf
PT journal article
AB We estimated chronic wasting disease (CWD) prevalence among vehicle-killed mule deer (Odocoileus hemionus) in select data analysis units (DAUs) in northern Colorado, USA, and compared these with estimated CWD prevalence among mule deer of the same sex sampled in the vicinity of collision sites to assess relative vulnerability of CWD-infected individuals to vehicle collisions. Twenty-five of 171 vehicle-killed mule deer tested positive for CWD (overall prevalence=0.146, 95% confidence interval [CI]=0.097-0.208); 173 of 2,317 deer sampled in the vicinity of these vehicle-killed deer tested positive (overall prevalence=0.075, 95% CI=0.064-0.085). In nine of ten DAU x sex comparisons, relative risk of CWD infection tended to be higher among vehicle-killed deer (range of estimated relative risks=1.6-15.9). Spongiform encephalopathy was detected in 12 of 20 (60%; 95% CI=39-81%) CWD-positive deer killed by vehicles and in 79 of 180 (44%; 95% CI=37-52%) CWD-positive deer detected via random sampling (relative risk=1.37; 95% CI=0.92-2.03), suggesting that infected deer killed by vehicles tended to be in later stages of disease than those killed by hunters. Our data offer evidence that CWD-infected mule deer may be relatively vulnerable to vehicle collisions. It follows that sampling of vehicle-killed mule deer may be exploited to increase efficiency of surveillance programs designed to detect new foci of CWD infection; moreover, evidence of increased susceptibility to vehicle collisions may aid in understanding vulnerability of CWD-infected individuals to other forms of death, particularly predation.
IN Hirsche mit dem chronic wasting disease scheinen öfter als gesunde Hirsche in Autounfälle verwickelt zu sein. Deshalb bieten sich nach Ansicht der Autoren als Risikogruppe für ein CWD-Überwachungsprogramm an.
MH *Accidents, Traffic; Animals; Cause of Death; Colorado/epidemiology; Comparative Study; Confidence Intervals; *Deer; Female; Food Chain; Male; Odds Ratio; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.; Risk; Wasting Disease, Chronic/*epidemiology/*mortality/physiopathology
AD Colorado Division of Wildlife, Wildlife Research Center, 317 West Prospect Road, Fort Collins, CO 80526-2097, USA
SP englisch
PO USA