1. Unité des Rickettsies, CNRS UPRESA 6020, Faculté de Médecine, Université de la Méditerrannée, 27 Boulevard Jean Moulin, 13385 Marseille Cedex 05, France
2. Department of Veterinary Pathology, Faculty of Veterinary Science, University of Liverpool, Leahurst, Neston CH64 7TE, UK
3. Respiratory and Systemic Infections Laboratory, Central Public Health Laboratory, Public Health Laboratory Service, London NW9 5HT, UK
4. Infectious Diseases Laboratories, Institute of Medical and Veterinary Science, Frome Road, Adelaide, SA 5000, Australia