CDFW partners with other agencies, landowners, and academic and private sector biologists to conduct both active and passive surveillance for White-nose Syndrome (WNS), a deadly fungal disease affecting bats. CDFW’s “Report a Sick or Dead Bat” and “Report a Bat Colony” webpages provide opportunities for the public to report bats that may be affected by WNS. CDFW also screens hundreds of bats submitted to public health departments each year for signs suggestive of WNS. To date, WNS has not been detected through these passive surveillance channels. Active surveillance by qPCR testing of swab samples from live bats captured and released during early spring was conducted at 10 and 11 sites across California in 2022 and 2023, respectively. In 2023, while most samples returned negative results, swab samples from bats at 7 sites in 6 counties yielded high Ct value positive results (these are considered inconclusive results), and one site yielded two samples with low Ct value positives (true positives). These are the first true positive detections of Pd in California. The 2023 results from CDFW’s surveillance add to the low-level detections of Pd obtained by partner surveillance projects, with a total of 10 California counties now showing such results.