1. Department of Veterinary Bacteriology Institute for Food Safety and Hygiene Vetsuisse Faculty University of Zurich Zurich Switzerland
2. Bacteriology Laboratory Geneva University Hospitals and University of Geneva Geneva Switzerland
3. Swine and Poultry Infectious Diseases Research Center (CRIPA) Groupe de recherche sur les maladies infectieuses des animaux de production Faculty of Veterinary Medicine University of Montreal Saint‐Hyacinthe QC Canada