New cases of highly pathogenic avian influenza (HPAI) in three states have been confirmed by the United States Department of Agriculture (USDA) Animal and Plant Health Inspection Service (APHIS).
Those states are South Dakota, Ohio and Wisconsin.
Both of the new cases in South Dakota involve commercial meat turkey birds. The first of those was confirmed on December 6 in Bon Homme County. There were 47,600 birds in that flock. The other case was confirmed on December 8 in Charles Mix County and involved 32,400 turkeys.
Ohio also had two flocks affected by HPAI in separate counties. One of those was in a commercial table egg layer flock in Hardin County, and involved more than 2.6 million hens. The other was a commercial meat turkey flock in Darke County, involving 15,200 birds. The presence of HPAI was confirmed in both flocks on December 7.
Wisconsin had one flock recently affected by HPAI. This involved a commercial flock of 70,000 meat turkeys in Barron County.
So far during the 2022-23 HPAI outbreak, South Dakota has had 91 commercial flocks affected by the virus, while Wisconsin and Ohio have had 17 and five flocks affected, respectively.
Updated figures from California HPAI infections
APHIS has provided updated information concerning two previously reported instances of HPAI in commercial flocks.
An earlier reported case at commercial broiler farm in Stanislaus County was confirmed on December 7. However, when it first announced the infection, APHIS did not provide information concerning the number of birds involved. The agency has since updated its website, showing that there were 258,600 chickens in that flock.
An earlier reported case of HPAI in a commercial meat duck flock in Sonoma County, also confirmed on December 7, had 4,900 birds involved. APHIS previously reported that there were 6,000 ducks involved.
Two more Canadian farms hit by HPAI
The Canadian Food Inspection Agency (CFIA) reported two more instances where HPAI was confirmed in commercial poultry flocks.
On December 8, the presence of the virus was confirmed in a commercial flock in Taber, Alberta. One day later, CFIA reported that a commercial flock in Abbotsford, British Columbia had been infected.
British Columbia and Alberta have had 127 and 48 commercial operations hit by HPAI during the past two years.
British Columbia remains the Canadian province to have the most commercial flocks affected by HPAI during the 2022-23 outbreak, with 126. Of those, 54 flocks were affected in 2023.
View our continuing coverage of the global avian influenza situation.
