| Abstract: | Surveillance programs for Chronic Wasting Disease (CWD) in free-ranging cervids often use a standard of being able to detect 1% prevalence when determining minimum sample sizes. However, 1% prevalence may represent >10,000 infected animals in a population of 1 million, and most wildlife managers would prefer to detect the presence of CWD when far fewer infected animals exist. We wanted to detect the presence of CWD in white-tailed deer (Odocoileus virginianus) in Pennsylvania when the disease was present in only 1 of 21 wildlife management units (WMUs) statewide. We used computer simulation to estimate the probability of detecting CWD based on a sampling design to detect the presence of CWD at 0.1% and 1.0% prevalence (23-76 and 225-762 infected deer, respectively) using tissue samples collected from hunter-killed deer. The probability of detection at 0.1% prevalence was <30% with sample sizes of ???6,000 deer, and the probability of detection at 1.0% prevalence was 46-72% with statewide sample sizes of 2,000-6,000 deer. We believe that testing of hunter-killed deer is an essential part of any surveillance program for CWD, but our results demonstrated the importance of a multifaceted surveillance approach for CWD detection rather than sole reliance on testing hunter-killed deer. |
| Genre: | Article |
| ProdID: | 70027438 |
| Citation Author: | Diefenbach, D. R.; Rosenberry, C. S.; Boyd, R. C. |
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| Citation End Page: | 272 |
| Citation Issue: | 1 |
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| Citation Language: | English |
| Citation Larger Work Title: | Wildlife Society Bulletin |
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| Citation Number Of Pages: | 6 |
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| Citation Search Results Text: | From the field: Efficacy of detecting Chronic Wasting Disease via sampling hunter-killed white-tailed deer; 2004; Article; Journal; Wildlife Society Bulletin; Diefenbach, D. R.; Rosenberry, C. S.; Boyd, R. C. |
| Citation Start Page: | 267 |
| Citation Volume: | 32 |
| Citation Year: | 2004 |
| Type: | citation/reference |
| Text: | From the field: Efficacy of detecting Chronic Wasting Disease via sampling hunter-killed white-tailed deer; 2004; Article; Journal; Wildlife Society Bulletin; Diefenbach, D. R.; Rosenberry, C. S.; Boyd, R. C. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Thu, 1 Jan 2004 00:00 -0600 |
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