[1] CDC, EIS, Atlanta, GA 30333 USA
[2] Ohio Dept Hlth, Columbus, OH 43266 USA
[3] US FDA, Ctr Vet Med, Rockville, MD 20857 USA
[4] US FDA, Coordinated Outbreak Response & Evaluat Network, Rockville, MD 20857 USA
[5] CDC, Div Foodborne Waterborne & Environm Dis, Natl Ctr Emerging & Zoonot Infect Dis, Atlanta, GA 30333 USA