Secretory and seric humoral immune response against haemophilus influenzae capsular polysaccharide type b in vaccinated healthy brazilian children aged 2 to 71 months - Takano, O A; Nagao, A T; Forleo, E; Vieira, V S; Costa-Carvalho, B T; Faiwichow, G; Carneiro-Sampaio, M. M. S. (Congresso do Instituto de Ciencias Biomedicas da Universidade de São Paulo, 1996)