410 ILCS 605/1

For the purpose of preventing the use of meat or meat food products, or poultry or poultry food products, which are unsound, unhealthful, unwholesome or otherwise unfit for human food, the Department of Agriculture may make or cause to be made an examination of any animal intended for human food which is believed to be afflicted with any contagious or infectious disease, or any disease or ailment which would render the carcass of the animal unfit for human food.