Taking a vaccinations before any trip is a great precaution. As the weather, water, food and other elements are changed, you may feel the need of a doctor. Vaccination may help you travel fit but of course, it is a personal choice. Hepatitis B, Japanese Encephalitis, Tetanus are some of the vaccinations you may consider to take. Yellow fever vaccination certificate is required for travelers over the age of 1 year, within the preceding 6 days, have been in or transited more than 12 hours through the airport of a country with risk of yellow fever transmission.
Also Check: Singapore Travel Guide to Plan your Trip well.