Reported by: Shawn Richards, Mark Glazier, Katie Masterson, Michael Denton, Indiana State Dept of Health; Cheryl Miller, DVM, Indiana Board of Animal Health. Carl Liebig, MD, Andrew J. Root, Cynthia Whitt, Mineral County Health Dept, Julie Freshwater, PhD, Sherif Ibrahim, MD, Danae Bixler, MD, Christi Clark, Loretta Haddy, PhD, West Virginia Dept of Public Health. Swine Influenza Virus Team, U.S. Dept of Agriculture. Douglas Jordan, MA, Matthew Biggerstaff, MPH, Scott Epperson, MPH, Lynnette Brammer, MPH, Lyn Finelli, DrPH, Susan Trock, DVM, Michael Jhung, MD, Joseph Bresee, MD, Stephen Lindstrom, PhD, Alexander Klimov, PhD, Daniel Jernigan, MD, Nancy Cox, PhD, Influenza Div, National Center for Immunization and Respiratory Diseases. Rachel Radcliffe, DVM, Career Epidemiology Field Officer Program, Office of Public Health Preparedness and Response; Tegwin Taylor, DVM, EIS officer, CDC. Corresponding contributor: Douglas Jordan, firstname.lastname@example.org, 404-639-3747.