1. Friedrich-Loeffler-Institut Greifswald-Insel Riems, Institute of Novel and Emerging Infectious Diseases, Suedufer 10, 17493 Greifswald, Germany
2. Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d’Aosta, Via Bologna 148, 10154 Torino, Italy
3. Health Canada, Transmissible Spongiform Encephalopathy Secretariat, Santé Canada Suite 14, AL 3000A 11 Holland Cross, K1A 0K9, Ottawa, Ontario, Canada