1. Department of Virology and Immunology, Faculty of Veterinary Medicine, University of Liège, B-1070 Brussels, Belgium
2. C.N.EVA.-Centre National d'Etudes sur la Rage et la Pathologie des Animaux Sauvages, F-54200 Malzèville, France
3. Laboratoire Iffa, Rhône-Mérieux, F-69007 Lyon, France
4. Transgene, S.A., F-67082 Strasbourg, France
5. Department of Rabies, Pasteur Institute of Brabant, B-1040 Brussels, Belgium