1Department of Microbiology, University Hospital Crosshouse, Lister Street, Kilmarnock KA2 0BE, UK
2School of Veterinary and Life Sciences, Murdoch University, and Department of Microbiology, Fiona Stanley Hospital, Western Australia, Australia
3School of Medicine, University of St Andrews, St Andrews, KY16 9TF, UK
4Institute of Infection and Immunity, St George's University of London, Cranmer Terrace, London SW17 0RE, UK
5Pathology Queensland Central Laboratory and Griffith University School of Medicine, Queensland, Australia
6Infectious Diseases and Intensive Care Unit, Pontchaillou University Hospital, 35033 Rennes, France
7Statens Serum Institut, 5 Artillerivej, DK-2300 Copenhagen S, Denmark