Affiliation: | 1. Public Health England, Food Water and Environmental Microbiology Laboratory Porton, Porton Down, Salisbury, UK;2. Public Health England, Food Water and Environmental Microbiology Laboratory London, Colindale, London, UK;3. Public Health England, Food Water and Environmental Microbiology Laboratory York, FERA, York, UK;4. Public Health England, Food Water and Environmental Microbiology Laboratory Preston, Royal Preston Hospital, Preston, UK;5. Public Health England, Food Water and Environmental Microbiology Laboratory Birmingham, Good Hope Hospital, Sutton Coldfield, UK;6. Gastrointestinal Bacteria Reference Unit, Public Health England, Colindale, London, UK;7. Gastrointestinal, Emerging and Zoonotic Infections Department, Public Health England, Colindale, London, UK;8. University of Liverpool, Institute of Infection and Global Health, Liverpool, UK |