1. Department of Medicine, University of Cambridge, Box 157, Addenbrooke’s Hospital, Hills Rd, Cambridge, CB2 0QQ, UK
2. Nuffield Department of Population Health, University of Oxford, Oxford OX3 7LF, UK
3. Department of Veterinary Medicine, University of Cambridge, Madingley Rd, Cambridge, CB3 0ES, UK
4. MRC Centre for Global Infectious Disease Analysis, School of Public Health, Imperial College London, London, UK
5. Wellcome Trust Sanger Institute Wellcome Trust Genome Campus, Hinxton, Cambridge, CB10 1SA, UK
6. National CPE Reference Laboratory, University Hospital Galway, Galway, Ireland
7. Antimicrobial Resistance and Microbial Ecology Group, School of Medicine, University of Galway, Galway, Ireland
8. Department of Infection Biology, Faculty of Infectious and Tropical Diseases, London School of Hygiene & Tropical Medicine, London WC1E 7HT, UK