This is a study to show that vaccination with three doses of Quinvaxem presented in Uniject is not inferior to vaccination with three doses of Quinvaxem presented in single dose vials, with respect to protection against all antibodies (anti-hepatitis B surface antibodies, anti-polyribosyl ribitol phosphate (PRP), anti-diphtheria, anti-tetanus and anti-Bordetella pertussis) one (1) month after completion of the 6-10-14 week vaccination course.