1. Northern Patagonian Regional Office, National Park Administration (APN)/National Council for Scientific and Technical Research (CONICET), Vice Almirante O'Connor 1188, San Carlos de Bariloche 8400, Río Negro, Argentina
2. Institute of Pathology, Faculty of Veterinary Sciences, National University of La Plata, PO Box 296, La Plata 1900, Argentina
3. Food and Animal Health National Service of Argentina (SENASA), Bariloche Office, Morales 392, San Carlos de Bariloche 8400, Río Negro, Argentina
4. California Animal Health & Food Safety Laboratory System, San Bernardino Branch, School of Veterinary Medicine, University of California–Davis, 105 W Central Ave., San Bernardino, California 92408, USA