Wisconsin Discovers Avian Flu in Cattle for First Time
In a significant discovery, the U.S. Department of Agriculture’s Animal and Plant Health Inspection Service (APHIS) reported the first case of highly pathogenic avian influenza (HPAI) in a dairy cattle herd in Wisconsin. Although this case raises concerns, APHIS assures that it does not pose any risk to consumer health or the safety of milk supplies.
Key Details of the Avian Flu Discovery
- Date of Announcement: Recent discovery announced by APHIS.
- Location: The affected herd is located in Dodge County, Wisconsin.
- Virus Strain: H5 clade 2.3.4.4b avian flu virus detected.
- Testing Program: Discovery was made through a routine national milk testing program.
- Health Risks: No risk to consumer health or commercial milk safety.
Regulatory Compliance and Health Monitoring
According to APHIS, all milk from infected animals is either redirected from commercial processing or destroyed, ensuring it does not enter the human food supply. Wisconsin State Veterinarian Darlene Konkle, DVM, confirmed that no signs of illness have been observed in the cattle, and the farm had adhered to routine surveillance since May.
Context of Avian Flu in Agriculture
This case in Wisconsin comes amid a quieter year for avian influenza detections in dairy cattle. In 2024, an outbreak affecting dairy herds across 18 states was documented. In the past month alone, a single dairy herd in California has tested positive. Meanwhile, significant avian flu outbreaks have impacted wild and commercial poultry, with major reports from states like Minnesota and North Dakota.
Recent Outbreak Statistics
- California: One dairy herd tested positive.
- Minnesota: 20,900 commercial turkeys affected.
- North Dakota: 19,500 commercial birds affected.
- Indiana: 6,200 ducks at a commercial facility reported new detections.
- Total Affected Birds: 880,000 over 90 flocks in the past month.
The USDA and APHIS are closely monitoring the situation to mitigate risks associated with avian flu. The public and dairy farmers are urged to stay informed as additional developments arise.
