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The schedule for polio vaccination for unvaccinated or under-vaccinated older children through age 17 years is 2 doses of IPV separated by 4â8 weeks, and a third dose 6â12 months after the second dose.
If an accelerated schedule is needed, the child should receive two doses separated by at least 4 weeks and a third (final) dose given at least 6 months after the second dose. Polio vaccine is not routinely administered to persons 18 years of age and older.nly one booster dose of polio vaccine in a person's lifetime is recommended. It is not necessary to receive a booster dose each time a person travels to an area where polio may still occur.