Trypanosomiasis by Trypanosoma vivax in cattle in the Brazilian semiarid: Description of an outbreak and lesions in the nervous system - Batista, J. S.; Riet-Correa, F.; Teixeira, Marta Maria Geraldes; Madruga, C. R.; Simões, S. D. V.; Maia, T. F. (Veterinary Parasitology, 2007)