The overall aim of the study is to corroborate that a schedule consisting of 3 doses of Pentacel™ and a 4th dose of DAPTACEL® and ActHIB® or 4 doses of Pentacel™ or 4 doses of Quadracel and ActHIB® is as safe and immunogenic as a standard of care schedule based on 3 doses of the licensed-equivalent vaccines DAPTACEL®, Vero cell derived Inactivated Poliovirus vaccine (IPOL®), and ActHIB® and a 4th dose of DAPTACEL® and ActHIB®.