What's the recommended polio vaccine schedule?
The polio vaccine schedule includes a shot at each of 2, 4, and 6 to 18 months and a fourth one between 4 and 6 years. The fourth dose isn't needed if your child gets the third dose after he's 4.
The version used today, called IPV (Inactivated Polio Vaccine) contains non-living strains of the virus. The oral version of the polio vaccine (OPV) is no longer available in the U.S. because it can actually cause polio in extremely rare cases (about 1 in 2.4 million), though it is still used in other parts of the world.
The polio vaccine is safe to be given along with other vaccines. It is also available as part of the DTaP and hepatitis B combination vaccine.