1. Laboratory of Animal Diagnosis, Universidade Federal Rural de Pernambuco, Recife, PE, Brazil
2. Laboratory of Veterinary Pathology, Universidade Federal da Paraíba, Areia, PB, Brazil
3. Parque Estadual de Dois Irmãos, Recife, PE, Brazil
4. Department of Pathology, Microbiology & Immunology, School of Veterinary Medicine, University of California–Davis, CA, USA
5. California Animal Health and Food Safety Laboratory System, San Bernardino Branch, School of Veterinary Medicine, University of California–Davis, CA, USA