Choosing to go on exhange gives you the opportunity to get familiar with other health care systems (as far as medicine, that i study, is concerned), other cultures and meet new people. Ι chose Sweden for my exchange studies because Sweden is famous having one of the best health care systems. The reason I chose Karolinska Institutet is because it is one of the best universities worldwide. Furthermore, Stockholm is known to be a really beautiful city, something that I saw myself. Another reason for choosing KI was that there were "options in English".
As for the exhange information, the site of KI was really informative and also the international exchange coordinator was really helpful and responded immediately to any question. In addition, the Welcome package that I received before my arrival was very helpful.
As for the vaccinations or other cerificates required, I was just asked to have an MRSA screening test, due to the fact that I was going to attend clinical rotations and consequently come in contact with patients.