The presence of highly pathogenic avian influenza (HPAI) was detected in four commercial poultry flocks and a commercial upland gamebird operation, with all cases being confirmed inn the United States on September 21.

Between those five cases, an estimated 1,288,100 birds were affected.

Avian influenza in Colorado

The largest of the affected flocks was a commercial layer flock in Weld County, Colorado, with 1.15 million chickens affected, the United States Department of Agriculture (USDA) Animal and Plant Health Inspection Service (APHIS) reported.

To date, Colorado has had five confirmed cases of HPAI in commercial poultry, and four of those were in Weld County. Three were in layer flocks that all included more than 1 million birds, while the other was in a layer pullet flock. The state’s other case in commercial poultry involved a commercial broiler breeder in Montrose County.

Avian influenza in Minnesota

Two new cases of HPAI were confirmed in commercial turkey flocks in Minnesota, bringing the total number of HPAI cases in the state’s commercial poultry operations in 2022 to 72.

The larger of the two new cases was in Roseau County, where 112,000 turkeys were affected. The other flock was in Otter Tail County and included 6,000 birds.

This is Roseau County’s first case and Otter Tail County’s sixth.

Avian influenza in Utah

The latest case to be confirmed in Utah was in a commercial flock of 11,100 turkeys in Sanpete County. All but one of the state’s seven HPAI cases in commercial poultry have been found in Sanpete County.

Avian influenza in Idaho

A commercial upland gamebird operation in Gooding County, Idaho, was hit by HPAI. There were 9,000 birds in that flock.


This is the first commercial operation in Idaho to have a confirmed case, although the state has had 26 cases in backyard poultry.

A fifth case of HPAI was confirmed in Manitoba

The Canadian Food Inspection Agency (CFIA) reported that a commercial poultry flock in the Rural Municipality of Ste. Anne tested positive for the virus.

The flock size or type of birds in the flock have not yet been disclosed.

Earlier cases of HPAI in Manitoba were confirmed in the rural municipality of Bifrost-Riverton, Cartier and Whitemouth, with two cases in Cartier. Four of the five total cases have occurred within the past week and a half.

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.

Attend the 2022 Poultry Tech Summit

In 2022, commercial poultry farms in North America and Europe have experienced some of the worst ever losses due to HPAI outbreaks. Attend the 2022 edition of Poultry Tech Summit on October 30 - November 1 in Atlanta, Georgia, to learn about the new technologies to improve on-farm biosecurity. This exclusive international gathering of industry-changing innovators, researchers, entrepreneurs, technology experts, investors and leading poultry producers focuses on the transition of innovative technologies into commercial applications to advance the poultry industry.

Registration is now open with early savings available.