Catherine Lexau1, Ruth Lynfield, Richard Danila, Tamara Pilishvili, Richard R. Facklam, Monica M. Farley, Lee H. Harrison, William Schaffner, Arthur Reingold, Nancy M. Bennett, James L. Hadler, Paul R. Cieslak, Cynthia G. Whitney
1Minnesota Department of Health, Minneapolis 55155-2538, USA. [email protected]