Vaccine type		Minimal age for dose 1	Minimal interval between doses 1 and 2	Minimal interval between doses 2 and 3	Minimal interval between doses 3 and 4
Hepatitis B		Birth	1 month	2 months	†
DTaP (DT)‡		6 weeks	4 weeks	4 weeks	6 months
Combined DTwP–Hib§		6 weeks	1 month	1 month	6 months
Hib (primary series)
	HbOC	6 weeks	1 month	1 month	§
	PRP-T	6 weeks	1 month	1 month	§
	PRP-OMP	6 weeks	1 month	§
Inactivated poliovirus		6 weeks	4 weeks	4 weeks‖	¶
Pneumococcal conjugate		6 weeks	1 month	1 month	§
MMR		12 months**	1 month
Varicella		12 months	4 weeks