1. Swiss Federal Office of Public Health, Bern, Switzerland / Veterinary Public Health Institute, University of Bern, Switzerland
2. Institute of Global Health, Faculty of Medicine, University of Geneva, Switzerland
3. Swiss Federal Office of Public Health, Bern, Switzerland / Veterinary Public Health Institute, University of Bern, Switzerlan
4. Service of Prevention and Infection Control, Directorate of Medicine and Quality, University Hospital Geneva, HUG, Geneva, Switzerland
5. Department of Infectious Diseases, Cantonal Hospital Graubuenden, Chur, Switzerland
6. Division of Infectious Diseases and Hospital Epidemiology, Cantonal Hospital St Gallen, Switzerland
7. Paediatric Infectious Diseases, Department of Paediatrics, Children’s Hospital, Cantonal Hospital Lucerne, Switzerland
8. Paediatric Infectious Diseases, Department of Paediatrics, Cantonal Hospital Winterthur, Switzerland
9. Infection Control Programme, EOC Hospitals, Ticino, Switzerland
10. Faculty of Science and Medicine, University of Fribourg, Switzerland / Department of Paediatrics, Fribourg Hospital HFR, Fribourg, Switzerland
11. Service of Infectious Diseases, Central Institute, Valais Hospitals, Sion, Switzerland
12. Division of Infectious Diseases and Hospital Hygiene, Thurgau Hospital Group Münsterlingen and Frauenfeld, Switzerland
13. Division of Infectious Diseases and Hospital Epidemiology, University Hospital Zurich and University of Zurich, Switzerland
14. Children's Hospital Aarau, Switzerland
15. Division of Infectious Diseases and Hospital Epidemiology, University Hospital Basel and University of Basel, Switzerland
16. Clinic for Internal Medicine, Cantonal Hospital, Hospitals Schaffhausen, Switzerland
17. Department of Infectious Diseases, Bern University Hospital (Inselspital), Bern, Switzerland / Infectious Diseases and Hospital Hygiene, Hirslanden Central Switzerland, Lucerne, Switzerland
18. Internal Medicine and Infectiology, Cantonal Hospital Nidwalden, Stans, Switzerland
19. Department of Infectious Diseases, Bern University Hospital (Inselspital), Bern, Switzerland
20. Service of Preventive Medicine, Lausanne University Hospital, CHUV, Lausanne, Switzerland
21. Swiss Federal Office of Public Health, Bern, Switzerland