Children’s polio vaccine booster shots need to follow the child’s immunization schedule. If a child has completed all 4 doses of polio vaccine within 1 year of age, he/she may not need a booster shot; otherwise, he/she will need another booster shot or oral live polio vaccine sugar pill.
Polio vaccine can prevent polio and is usually given to children at 2, 3 and 4 months of age, with a booster at 4 years of age as the normal immunization schedule. If there is a polio epidemic, it is recommended that a booster shot may be given to strengthen immunization.
If a child has completed the full 3-dose basic polio vaccine immunization and the 4th booster shot at 18 months of age within 1 year, he/she may not need to receive booster shots; otherwise, he/she will need to receive another booster shot or oral live polio vaccine sugar pill.