Always see medical advice before travelling to an “exotic” place. And very important: Talk to a doctor who is specialized in travel medicine and has the most up-to-date information about the region where you are going.
Here are some useful websites dedicated to travel medicine

TRAVEL MEDICINE LINKS Centers for Disease Control and Prevention (english language) World Health Organization – International travel and health (english language) Vorgaben des schweizerischen Experten Komitees für Reisemedizin (german language) Die Ostschweizer Infostelle für Reisemedizin (german language) Deutsche Gesellschaft für Tropenmedizin (german language) Medycyna Tropikalna (polish language)