Prevalence of leptospiral antibodies in dogs from Monte Negro, Rondônia, Western Amazon, Brazil - Marvulo, M. F. V.; Silva, J. C. R.; Pinter, A.; Labruna, Marcelo Bahia; Morais, Z. M.; Camargo, Luís Marcelo Aranha; Camargo, E. P.; Ferreira Neto, José Soares; Vasconcellos, Silvio Arruda (Scientific Meeting [of the] International Leptospirosis Society, 2002)