Claire Johnston1,2, Harriet Hughes3, Sion Lingard4, Stephen Hailey5, Brendan Healy6,2. 1. Infectious Diseases, Public Health Wales, Cardiff, UK. 2. Department of Microbiology, Morriston Hospital, Swansea, UK. 3. Microbiology Department, Public Health Wales, Cardiff. 4. Health Protection Team, Public Health Wales, Swansea. 5. Medical Directorate - General Practice & Revalidation, NHS Wales Health Education and Improvement Wales, Nantgarw, Rhondda Cynon Taff, UK. 6. Cardiff and Vale University Health Board, Public Health Wales, Cardiff brendan.healy@wales.nhs.uk.