| Institution: | 1. Virology Laboratory, Department of Microbiology, Immunology and Parasitology, Institute of Basic Health Sciences, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, Rio Grande do Sul, Brazil;2. Fepagro Animal Health –Institute of Veterinary Research Desidério Finamor (IPVDF), Eldorado do Sul, Rio Grande do Sul, Brazil;3. Pathology Laboratory, Department of Clinical Pathology, Faculty of Veterinary Sciences, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, Rio Grande do Sul, Brazil |
