The United States has gone one month without any new cases of highly pathogenic avian influenza (HPAI) in commercial poultry flocks.
According to the United States Department of Agriculture (USDA) Animal and Plant Health Inspection Service (APHIS), the last instance of HPAI in a commercial flock was confirmed on July 19 in a flock of commercial table egg pullets in Weld County, Colorado. The flock involved 300,800 pullets.
The only other instances of HPAI to be reported since that time have been in non-commercial flocks in Florida, with those cases being confirmed in July 24 and August 5. However, according to World Organisation for Animal Health (WOAH) rules, those cases should not have an impact on international trade.
So far in 2024, the following states have had confirmed cases of HPAI in commercial poultry flocks: Minnesota, Michigan, Colorado, Iowa, Texas, South Dakota, Missouri, North Carolina, Nebraska, Indiana, Kansas, California and Wisconsin.
The last time the United States went this long without any new HPAI detections in commercial poultry was in 2023. However, that gap between confirmed cases was longer. During that year, two commercial turkey flocks were affected on April 19, with one of those in North Dakota and the other in South Dakota. After those two cases were confirmed, the next case of HPAI in a U.S. commercial flock was not confirmed until another South Dakota flock was infected on October 4.
Elsewhere in North America, Canada has not had any confirmed cases of HPAI in commercial poultry since February 19, 2024. Mexico’s last case of HPAI in a commercial flock was reported on October 28, 2023.
View our continuing coverage of the global avian influenza situation.
To learn more about HPAI cases in commercial poultry flocks in the United States, Mexico and Canada, see an interactive map on WATTPoultry.com.
