1. Department of Pathobiological Sciences, University of Wisconsin–Madison, Madison, WI, USA
2. Wisconsin Department of Natural Resources, Bureau of Fisheries Management, Madison, WI, USA
3. United States Fish and Wildlife Service, La Crosse Fish Health Center, Onalaska, WI, USA
4. Minnesota Veterinary Diagnostic Laboratory, College of Veterinary Medicine, University of Minnesota, St. Paul, MN, USA
5. Global Health Institute, University of Wisconsin–Madison, Madison, Wisconsin, USA