The California Department of Fish and Wildlife (CDFW) has confirmed outbreaks of adenovirus hemorrhagic disease in deer in several northern California counties, and is asking California residents to help curb the spread by not feeding wild animals, and reporting potential cases to the department.

Beginning in May, CDFW began receiving increased reports of mortality in deer, both free-ranging and at fawn rehabilitation facilities. With the assistance of wildlife rehabilitation facilities and the California Animal Health and Food Safety Laboratory, CDFW confirmed cervid adenovirus 1 (CdAdV-1) as the cause of hemorrhagic disease outbreaks in Napa, Santa Clara, Sonoma, Tehama and Yolo counties.