Eligibility Criteria:
Inclusion Criteria:
* Healthy adults 18-45 years of age
* Subjects born in Belgium or any other country where mandatory polio vaccination is performed.
* Written informed consent obtained from the subject.
* Female subjects of childbearing potential may be enrolled in the study, if the subject:
1. has practiced adequate contraception for 30 days prior to vaccination, and
2. has a negative pregnancy test on the day of vaccination, and
3. has agreed to continue adequate contraception for 2 months after vaccination.
Exclusion Criteria:
* Participation in another clinical trial.
* Any polio vaccine within 6 months before study inclusion.
* Any other vaccination in the period starting 14 days before administration of study vaccine and ending 28 days after administration of the study vaccine.
* Previous severe reaction after vaccination with polio vaccine.
* Known hypersensitivity to one or more components of the vaccine.
* Uncontrolled, clinically significant neuro-psychiatric, cardiovascular, pulmonary, hepatic, renal, metabolic, gastrointestinal, urologic or endocrine disease.
* Subjects with an history of malignant disease (cancer)
* Known human immunodeficiency virus (HIV) positivity or other immune deficiency or immune suppressive treatment or auto-immune disease. For corticosteroids, a prednisone dose of \<20 mg/day, or equivalent, is allowed. Inhaled and topical corticosteroids are allowed.
* Acute disease and/or fever (higher or equal to 37.5°C, measured orally) at the time of enrolment. Subjects with a minor illness (such as mild diarrhoea, mild upper respiratory tract infection) without fever may be enrolled at the discretion of the investigator.
* Pregnant or lactating female. Subject who, in the opinion of the investigator, is unlikely to comply with the protocol or is inappropriate for any other reason.
* Known hypersensitivity to one or more components of the vaccine.
* Uncontrolled, clinically significant neuro-psychiatric, cardiovascular, pulmonary, hepatic, renal, metabolic, gastrointestinal, urologic or endocrine disease.
* Subjects with an history of malignant disease (cancer)
* Known human immunodeficiency virus (HIV) positivity or other immune deficiency or immune suppressive treatment or auto-immune disease. For corticosteroids, a prednisone dose of \<20 mg/day, or equivalent, is allowed. Inhaled and topical corticosteroids are allowed.
* Acute disease and/or fever (higher or equal to 37.5°C, measured orally) at the time of enrolment. Subjects with a minor illness (such as mild diarrhoea, mild upper respiratory tract infection) without fever may be enrolled at the discretion of the investigator.
* Pregnant or lactating female.
* Subject who, in the opinion of the investigator, is unlikely to comply with the protocol or is inappropriate for any other reason.