IM Infant 6 wk-6 mth 3-dose primary series: 4 doses of 0.5 mL (3 primary doses w/ 1st dose given at 6 wk of age w/ at least 1 mth interval between doses & booster dose from 9 mth onwards given at least 6 mth after the last primary dose). 2-dose primary series: 3 doses of 0.5 mL (2 primary doses given 2 mth apart w/ 1st dose given at 6 wk age & booster dose from 9 mth onwards given at least 6 mth after the last primary dose.
Preterm infant 27 wk of gestational age 4 doses of 0.5 mL (3 primary doses w/ 1st dose given at 2 mth w/ at least 1 mth interval between doses & booster dose at least 6 mth after the last primary dose).
Previously unvaccinated childn & older infant: Childn 12 mth to 5 yr 2 doses of 0.5 mL w/ at least 2 mth interval between doses,
7-11 mth 2 doses of 0.5 mL w/ at least 1 mth interval between doses. 3rd dose is recommended in the 2nd yr of life w/ at least 2 mth interval.