1 Graduate Program in Veterinary Sciences, Veterinary Institute, Federal Rural University of Rio de Janeiro, Seropédica, RJ, Brazil.
2 Oswaldo Cruz Foundation, IOC-FIOCRUZ-RJ, Rio de Janeiro, RJ, Brazil.
3 FIOCRUZ-PI, Teresina, Piauí, Brazil.
4 Iguaçu University-UNIG, Nova Iguaçu, RJ, Brazil.
5 Department of Epidemiology and Public Health, Veterinary Institute, Federal Rural University of Rio de Janeiro, Seropédica, RJ, Brazil.
6 Centre for Cell Biology, Development and Disease, Department of Biological Sciences, Simon Fraser University, Burnaby, BC, V5A 1S6, Canada.
7 Department of Animal Parasitology, Veterinary Institute, Federal Rural University of Rio de Janeiro, Seropédica, RJ, Brazil.
8 Department of Epidemiology and Public Health, Veterinary Institute, Federal Rural University of Rio de Janeiro, Seropédica, RJ, Brazil. isabeleangelo@yahoo.com.br.