DES MOINES, Iowa (AP) — There will be no chickens or ducks at the Iowa State Fair this summer and no poultry shows at county fairs in Iowa this year as the bird flu continues to infect birds. Iowa Department of Agriculture officials on Thursday prohibited all live bird exhibitions at fairs and live bird sales at livestock auctions and swap meets. The order lasts through the end of the year.

Iowa has more than 25 million birds and more than 60 farms infected with the H5N2 virus. Secretary of Agriculture Bill Northey says the scale of the current outbreak is unprecedented and it’s important to take every step possible to limit the spread of the disease.

Other states to take similar steps include Minnesota, North Dakota, Pennsylvania and West Virginia.