Nasopharyngeal colonization with streptococcus pneumoniae among infants born to HIV-1-infected mothers vaccinated with the polysaccharide vaccine during pregnancy - Almeida, Volia de Carvalho; Mussi-Pinhata, Marisa Márcia; Negrini, Bento V. M.; Cervi, Maria Célia; Isaac, Marcia L. (Annual Meeting of The Pediatric Academic Societies, 2006)