Safety Study of a Vaccine Against Meningitis in Infants ( 2,4 & 6 Months Age) After a Birth Dose of Hepatitis B.

Inclusion criteria at study entry: * Healthy infants aged less than or equal to 3 days of age, written informed consent obtained from the parents, born after a gestation period of 36 to 42 weeks. Exclusion criteria at study entry: * Any confirmed immunodeficient condition, based on medical history \& physical examination. * A family history of congenital or hereditary immunodeficiency. * Major congenital defects or serious chronic illness. * History of any neurologic disorders or seizures. * Administration of immunoglobulins and/or any blood products since birth or planned administration during the study period. * Acute disease at the time of enrolment.