1. Department of Animal and Food Sciences, International Center for Food Industry Excellence, Texas Tech University, Lubbock, Texas, USA
2. Influenza Division, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
3. Center for Food Safety, University of Georgia, Griffin, Georgia, USA
4. Meat Animal Research Center, U.S. Department of Agriculture, Agricultural Research Service, Clay Center, Nebraska, USA