The Eurasian strain of Highly Pathogenic Avian Influenza (HPAI) H5N1 has resurfaced in California, with wildlife disease specialists confirming its presence in migratory birds. Initial cases involved Canada geese in Sacramento County, with further detections occurring in various counties during mortality and hunter-harvest surveillances. The virus, circulating since the winter of 2021-22, had subsided in spring and summer but is on the rise again with fall migration.
The virus was confirmed to have reached Lassen County by CDFW biologist Brian Ehler last December when dead geese at Emmerson Lake at the Golf Course were tested and confirmed to have died of the virus. The collection of dozens of more birds at Eagle Lake prompted further testing for the influenza that same winter.
To reduce the spread of Avian flu, the community and hunters alike are advised to report dead wild birds and sick and dead poultry and take precautions. Measures include preventing contact between domestic and wild birds, not feeding waterfowl at park ponds, and disposing of dead birds safely. Waterfowl hunters are urged to harvest only healthy birds, practice safe field dressing, and thoroughly cook game. Additionally, hunters should clean and disinfect equipment, bathe hunting dogs, and avoid feeding them raw meat during the outbreak.
For more information, you can refer to CDFW’s website and the USDA’s official list of Avian Flu detections.
