Prevalence of anti-Toxoplasma gondii and anti-Neospora caninum antibodies in swine from northeastern Brazil - Gennari, Solange Maria; Azevedo, Sérgio Santos de; Pena, Hilda Fátima de Jesus; Schares, Gereon; Maksimov, Pavlo; Alves, Clebert José; Guimarães Filho, Antonio Alfredo de Melo (World Association for the Advancement of Veterinary Parasitology, 2009)