March 16, 2017 – The United States Department of Agriculture’s (USDA) Animal and Plant Health Inspection Service (APHIS) has confirmed a second case of highly pathogenic H7N9 avian influenza in a commercial breeder flock in Lincoln County, Tenn.
This H7N9 strain is of North American wild bird lineage and is the same strain of avian influenza that was previously confirmed in Tennessee. It is not the same as the China H7N9 virus that has impacted poultry and infected humans in Asia. The flock of 55,000 chickens is located in the Mississippi flyway, within three kilometers of the first Tennessee case.
Samples from the affected flock, which displayed signs of illness and experienced increased mortality, were tested at Tennessee’s Kord Animal Health Diagnostic Laboratory and confirmed at the APHIS National Veterinary Services Laboratories (NVSL) in Ames, Iowa.
The USDA is working with the Tennessee Department of Agriculture on the joint incident response. State officials quarantined the affected premises, and depopulation has begun. Federal and state partners will conduct surveillance and testing of commercial and backyard poultry within a 10 kilometer (6.2 mile) radius of the site.
The USDA will be informing the World Organisation for Animal Health (OIE) as well as international trading partners of this finding.
The Tennessee Department of Agriculture is working directly with poultry workers at the affected facilities to ensure that they are taking the proper precautions to prevent illness and contain disease spread.