1. Tuberculosis, Acute Respiratory, Gastrointestinal, Emerging/Zoonotic Infections, and Travel and Migrant Health Division, National Infection Service, Public Health England, London, United Kingdom
2. Healthcare Associated Infection & Antimicrobial Resistance Service, National Infection Service, Public Health England, London, United Kingdom
3. Gastrointestinal Bacteria Reference Unit, Reference Microbiology Services, National Infection Service, Public Health England, London, United Kingdom
4. Statistics, Modelling and Economics Department, National Infection Service, Public Health England, London, United Kingdom