Two cases of highly pathogenic avian influenza (HPAI) were confirmed in commercial broiler breeder flocks in Weakley County, Tennessee.

According to information from the United States Department of Agriculture (USDA) Animal and Plant Health Inspection Service (APHIS), both cases were confirmed on December 28. One of the affected flocks included 43,600 birds, while the other involved 19,000 birds.

Weakley County has now had four confirmed cases of HPAI, but the previous two cases were only identified as poultry in accordance with World Organisation for Animal Health (WOAH) standards.

The state’s only other commercial case of HPAI was also in a broiler breeder operation in Bledsoe County. In that case, 20,900 birds were affected.

The country’s only other case to be reported since Christmas involved a non-poultry flock in Kansas, and that case was also confirmed on December 28.

British Columbia avian influenza cases surpass 70

British Columbia’s total count for cases of highly pathogenic avian influenza (HPAI) in 2022 has hit 71, after the presence of the virus was confirmed two commercial poultry flocks in Chilliwack.


One of the cases was confirmed on December 27, while the other was confirmed one day later, the Canadian Food Inspection Agency (CFIA) reported.

CFIA did not offer further information concerning the size of those flocks or the types of birds involved.

The total number of HPAI cases in Chilliwack has reached 17. Abbotsford is the British Columbia Municipality with the most cases to date, with that number standing at 43. 

British Columbia has also now had more cases of HPAI than all U.S. states, except for Minnesota, which has had 81 cases.

To learn more about HPAI cases in commercial poultry flocks in the United States and Canada, see an interactive map on 

Read our ongoing coverage of the global avian influenza outbreak.