Vaccinations are not required for visiting Singapore unless you have
traveled to or transited an area which is yellow fever infected. Other then that, Singapore is relatively high in hygiene and health care standards. In Singapore, you are perfectly safe from water-borne or food-borne diseases. It is recommended though to take flu vaccine just to prevent from contracting any flu symptom that might ruin your stay in Singapore.
Travel Singapore
traveled to or transited an area which is yellow fever infected. Other then that, Singapore is relatively high in hygiene and health care standards. In Singapore, you are perfectly safe from water-borne or food-borne diseases. It is recommended though to take flu vaccine just to prevent from contracting any flu symptom that might ruin your stay in Singapore.
Travel Singapore