As of Sunday, Tyson Foods was stopping operations at a plant in Logansport, Indiana, and had suspended operations at its largest pork plant, in Waterloo, Iowa. JBS said it would shutter a beef production plant in Wisconsin after closing another one in Minnesota. And Smithfield Foods, which already closed a big pork plant in South Dakota, announced that it had stopped production on a rolling basis since April 19 at a dry sausage plant in St. Charles, Illinois, and that it would suspend operations at its Monmouth, Illinois, pork facility beginning next week until further notice.