Only one IPV Dose was given at 18 week (But NOT alongwith OPV Primary dose at 14 week.) However, 3 primary doses of OPV at 6, 10, 14 week of age given. In this situation, Can IPV Booster dose be given at 12-18 months?
According to WHO, one dose of IPV is essential now along with OPV primary dose schedule. You may or may not give IPV booster at 12-18 months. Additional OPV doses till 5 years on all pulse polio days.