Pierce
| CWD Year | Period | # Sampled | # Analyzed | Positive for CWD |
|---|---|---|---|---|
| 2024 | Out-of-Season Surveillance | 3 | 3 | 1 |
| 2023 | Hunting Season Surveillance | 52 | 52 | 0 |
| 2023 | Out-of-Season Surveillance | 1 | 1 | 0 |
| 2022 | Hunting Season Surveillance | 57 | 57 | 0 |
| 2021 | Hunting Season Surveillance | 67 | 67 | 0 |
| 2020 | Hunting Season Surveillance | 71 | 71 | 0 |
| 2020 | Out-of-Season Surveillance | 3 | 3 | 0 |
| 2019 | Hunting Season Surveillance | 49 | 49 | 0 |
| 2019 | Out-of-Season Surveillance | 3 | 3 | 0 |
| 2018 | Hunting Season Surveillance | 286 | 286 | 0 |
| 2018 | Out-of-Season Surveillance | 1 | 1 | 0 |
| 2017 | Hunting Season Surveillance | 5 | 5 | 0 |
| 2016 | Hunting Season Surveillance | 1 | 1 | 0 |
| 2013 | Out-of-Season Surveillance | 4 | 4 | 0 |
| 2011 | Hunting Season Surveillance | 1 | 1 | 0 |
| 2009 | Hunting Season Surveillance | 1 | 1 | 0 |
| 2007 | Hunting Season Surveillance | 1 | 1 | 0 |
| 2006 | Hunting Season Surveillance | 194 | 194 | 0 |
| 2006 | Out-of-Season Surveillance | 1 | 1 | 0 |
| 2005 | Hunting Season Surveillance | 1 | 1 | 0 |
| 2002 | Hunting Season Surveillance | 112 | 112 | 0 |
| Totals: | ||||
