Question: how many polio vaccines are needed?
Answer: Polio vaccination These are normally given at: 8, 12 and 16 weeks of age – as part of the 6-in-1 vaccine. 3 years and 4 months of age – as part of the 4-in-1 (DTaP/IPV) pre-school booster. 14 years of age – as part of the 3-in-1 (Td/IPV) teenage booster.