Commissioners question CWD sampling and recent positives in Bishop area

Sep 2, 2026

CDFW outlined the agency's CWD sampling methods and said positives are concentrated around Bishop; commissioners raised questions about chain-of-custody and possible sources including dumped carcass material from out-of-state hunters.

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Pat Sater told commissioners that CWD testing relies on hunter-harvested samples and samples from animals found sick or struck on roads; he said positives so far are limited to the Bishop area and one San Joaquin-side positive. "The only positives we have are down out of Bishop," Sater said, and he described mandatory sampling zones and that hunter-harvested samples from those zones have not returned positives.

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