- Filipino male or female subjects who enter the PMS at the booster dose (i.e. if they have received Synflorix™ in the previous dose/s outside the PMS) should not be less than 10 months of age. The time interval between the primary vaccination and booster dose should be at least 6 months. For the booster dose, subjects who received PCV-7/-13 or Synflorix™ in their primary vaccination series will be allowed to take part in the PMS.