Vaccination can start soon after birth.For example, BCG and oral polio vaccine can be given on the first day itself. The doses of various vaccines are scheduled in such a manner that the child gets maximum protection when he needs it and with minimum side effects.However, there are situations when vaccination may have to be postponed. In such an event the vaccine dose can be given at a later date.In this sense, the vaccination schedule can be considered to be flexible.
Vaccines differ in their ability to protect children.For example, BCG vaccine mainly offers protection from severe forms of disease while tetanus toxoid offers almost 100% protection from tetanus. Vaccines are effective in protecting from various diseases.The protection can be absolute or partial and it may be short lasting or long lasting. The vaccine benefits most children. However, it is not effective in each and every child.
