Doctors agree that giving a single injection of combination immunizations such as DTaP/IPV/Hib or MMR is safe..
The DTP vaccination is frequently given as part of a quadrivalent, pentavalent, or hexavalent combination vaccine.
It’s tough to administer the immunizations individually. To begin with, specific immunizations may not be widely available or recommended by your physician.
Second, some immunizations will require multiple doses, with minimum of four weeks in between doses. As a result, administering them to your baby separately would cause him to miss his immunizations.