Sousa, R.Á. de Lemos, J. da F. Farias, L.A. Lopes, C.D. Santos, K.R. dos Seroprevalence and risk factors for Toxoplasma gondii infection in pigs in southern Piauí Subjects--Topical Terms: SUÍNOTOXOPLASMOSETOXOPLASMA GONDIIPROTOZOARIODOENCA ANIMALSOROINFECCAO