The latest instances of highly pathogenic avian influenza (HPAI) include commercial poultry operations in four states.
According to information from the United States Department of Agriculture (USDA) Animal and Plant Health Inspection Service (APHIS) the presence of HPAI was confirmed in seven commercial poultry flocks in the U.S. from February 10 to February 12 in the states of Ohio, Pennsylvania, Indiana and Missouri.
Ohio
HPAI’s assault on commercial poultry in Ohio continues with the presence of the virus being confirmed in three more flocks – all of which were in Mercer County.
On February 10, the virus was confirmed in a flock of 20,100 meat turkeys. The following day, the virus was confirmed in a flock of 20,000 laying hen pullets. On February 12, HPAI was confirmed in a flock of 131,000 laying hens.
With these three new flock infections, the number of commercial flocks in Ohio to be affected by HPAI in 2025 reaches 58.
Pennsylvania
The presence of HPAI was confirmed in two commercial poultry flocks in Pennsylvania on February 11. One of those involved 80,000 broilers in Lancaster County, while the other involved 20,000 meat ducks.
Pennsylvania has had seven commercial flocks struck by HPAI in 2025, with all of those cases being confirmed in February.
Missouri
Missouri’s newest case of HPAI involved a flock of 14,100 commercial turkey breeder hens in Lawrence County. That situation was confirmed on February 10.
Missouri has now had 20 commercial flocks affected by HPAI this year.
Indiana
APHIS on February 11 confirmed the presence of HPAI commercial flock of about 912,000 commercial laying hens in Jay County. That flock was earlier reported by the Indiana State Board of Animal Health (BOAH) as presumed-positive.
BOAH has since reported two more presumed-positive flocks in Jay County, with those flocks collectively including nearly 2.7 million laying hens. APHIS has not yet confirmed the presence of the virus in either of these flocks.
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.
