Currently, the NIP’s vaccination calendar is comprised of nine types of vaccines, namely Bacillus Calmette Guerin (BCG), hepatitis B, oral polio vaccine, diphtheria-polio-tetanus-hepatitis B-hemophilus influenza B (DPT-HepB-Hib), pneumococcal conjugate vaccine (PCV13), inactivated polio vaccine, measles/ rubella at 9 months (MR9), measles/rubella at 18 months (MR18), and Japanese encephalitis.10