1. Department of Arbovirology and Hemorrhagic Fevers, Evandro Chagas Institute, Brazilian Ministry of Health, Ananindeua, Pará, Brazil.
2. Department of Pathology, University of Para State, Belém, Brazil.
3. Arthropod-Borne and Infectious Diseases Laboratory, Department of Microbiology, Immunology and Pathology, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, Colorado.