Travelling in Greece does not require special vaccination from the travellers but a yellow fever vaccination is required if you are coming from a country considered as an infected area. The World Health Organization recommends to the travellers to be covered for diphtheria, measles, mumps, tetanus, rubella and polio. If you are under a medical treatment, it is advisable to bring the medicines with you, as you might not find the exact medicines in Greece. Travellers from Member States of the European Union must have the European Health Card (EHIC), formerly known as E111, in order to have access to free health treatment provided from the public hospitals of Greece. Travellers from non-Member States of the European Union must refer to their social security agency before travelling in Greece.