1. Institute for Food Safety and Hygiene, Vetsuisse Faculty University of Zürich, Zürich, Switzerland
2. National Reference Center for Enteropathogenic Bacteria and Listeria (NENT), Institute for Food Safety and Hygiene, Vetsuisse Faculty, University of Zurich, 8057 Zurich, Switzerland
3. Gastrointestinal Bacteria Reference Unit, UK Health Security Agency, London, UK