A deadly bird flu strain was confirmed Friday at one North Dakota turkey farm and at four more in Minnesota, raising the number of farms affected across the Midwest to 20 and the toll to almost 1.1 million birds since the outbreak was first confirmed in early March. The U.S. Department of Agriculture said the new cases in Minnesota of the highly contagious H5N2 strain are in Cottonwood, Lyon, Watonwan and Stearns counties. The four new farms housed a combined 189,000 turkeys. In North Dakota, State Veterinarian Susan Keller said the National Veterinary Services Laboratories in Iowa confirmed the H5N2...