Human Infections with Non-O157 Shiga Toxin–producing Escherichia coli, Switzerland, 2000–2009
Ursula Käppeli, Herbert Hächler, Nicole Giezendanner, Lothar Beutin, and Roger Stephan
Author affiliations: Author affiliations: University of Zurich, Zurich, Switzerland (U. Käppeli, H. Hächler, N. Giezendanner, R. Stephan); Federal Institute for Risk Assessment, Berlin, Germany (L. Beutin)
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