ST. PAUL — The top turkey producing county in the country’s top turkey state has recorded its 40th case of bird flu.

The Minnesota Board of Animal Health on Friday said the state’s latest presumed positive detection is a turkey farm in Kandiyohi County, which has seen more avian influenza outbreaks than any other in the state. The new flock size is still being determined.

Bird flu has now affected 108 Minnesota turkey and chicken farms in 23 counties, costing producers nearly 8.9 million birds.

Minnesota and Iowa are the hardest hit states. The U.S. Department of Agriculture says Midwest chicken and turkey producers have lost nearly 47 million birds on over 200 farms since the region’s first case of H5N2 avian influenza.