* A yellow fever vaccination certificate is required from travellers aged one year and over who have visited infected or endemic areas within the previous six days.

All water should be regarded as being potentially contaminated. Water used for drinking, brushing teeth or making ice should have first been boiled or sterilised. Milk is unpasteurised and should be boiled. Powdered or tinned milk is available and advised. Avoid all dairy products. Only eat well-cooked meat and fish. Vegetables should be cooked and fruit peeled.

Amoebic and bacillary dysentery and hepatitis E may occur. Hepatitis B is highly endemic in the region. Dengue fever and Japanese encephalitis occur occasionally. Vaccination against tuberculosis is sometimes advised.

Medical insurance is advised. Medical facilities are of a high standard. The health administration of Brunei reserves the right to vaccinate arrivals not in possession of required certificates and to take any other action deemed necessary to ensure arrivals present no health risk.