Seroprevalence of toxoplasmosis among pregnant women and evaluation of a screening program in southeastern Brazil - Duarte, A. H. Lott; Carvalheiro, Clarisse Dulce Gardonyi; Yamamoto, Aparecida Yulie; Duarte, Geraldo; Mussi-Pinhata, Marisa Márcia (World Congress of the World Society for Pediatric Infectious Diseases (WSPID), 2011)