Affiliation: | Centers for Disease Control and Prevention, Atlanta, Georgia, USA (A.P. Newman, T.M. Uyeki, A. Balish, B. Shu, S. Lindstrom, J. Achenbach, C. Smith);Wisconsin Division of Public Health, Madison, Wisconsin, USA (A.P. Newman, J.P. Davis);Wisconsin State Laboratory of Hygiene, Madison (E. Reisdorf);Sheboygan County Health and Human Services, Sheboygan, Wisconsin, USA (J. Beinemann);1Current affiliation: New York State Department of Health, Albany, New York, USA. |