In response to the recent detection of highly pathogenic avian influenza (HPAI) in dairy cows, the U.S. Department of Agriculture (USDA) has issued new recommendations aimed at minimizing the transmission of influenza at dairy cattle livestock exhibitions. This proactive measure comes after a multi-agency investigation, involving the USDA, Food and Drug Administration (FDA), Centers for Disease Control and Prevention (CDC), and state veterinary and public health officials, which began in late March 2024.

HPAI, though typically deadly to domestic poultry, has shown less severe effects in cattle. However, the disease remains a significant concern for all livestock and humans who may come into contact with infected animals. The USDA’s investigation revealed that the disease could spread between cows within the same herd, from cows to poultry, and between dairies associated with cattle movements. Notably, some cows without clinical signs have tested positive for the virus, highlighting the need for vigilant monitoring and preventive measures.

Livestock exhibitions are valuable for education and showcasing agricultural efforts, but they also pose a risk for the spread of illnesses among animals from different herds. To address this, the USDA recommends several measures to reduce the potential for influenza transmission at these events.