If you are travelling to a country where there is a risk of Polio, you will still need a Polio vaccination. This is because there are three strains of Polio virus and if you have been infected with one type you could still get another.
Polio remains endemic in three countries- Afghanistan, Nigeria and Pakistan.
You will also need to consider other types of vaccine or medications recommended for the country you are visiting. Your GP or practice nurse should be able to advise you.
For more information see Immunisation