1. Section of Paediatric Infectious Disease, Department of Infectious Disease, Imperial College London, London, United Kingdom
2. Department of Microbiology and Infection Control, Statens Serum Institut, Copenhagen, Denmark
3. The Wellcome Trust Sanger Institute, Cambridge, United Kingdom
4. Department of Veterinary Medicine, University of Cambridge, Cambridge, United Kingdom
5. Faculty of Infectious & Tropical Diseases, London School of Hygiene & Tropical Medicine, London, United Kingdom
6. Department of Pathology and Pathogen Biology, The Royal Veterinary College, Hatfield, United Kingdom