On Mar. 28, 2024, the Idaho State Department of Agriculture (ISDA) announced it had identified a highly pathogenic avian influenza (HPAI) in a Cassia County dairy cattle operation.

These are the first cases of HPAI in a livestock operation in Idaho. The affected facility recently imported cattle from another state that has identified cases of HPAI in cattle, which suggests the virus may be transmitted from cow-to-cow, in addition to previous reports indicating cattle were acquiring the virus from infected birds.

The ISDA encouraged all dairy producers to closely monitor their herd and contact their local veterinarian immediately if cattle appear to show symptoms.