Water used for drinking, brushing teeth or making ice should have first been boiled or otherwise sterilised.
Mineral water is widely available. Milk should be boiled.
Powdered or tinned milk is available.
Only eat well-cooked meat and fish.
Vegetables should be cooked and fruit peeled.
Hepatitis E occurs; hepatitis B is endemic. Giardiasis is common. Meningitis is a sporadic risk and vaccination is advised. Tuberculosis exists.
There is a small risk of Japanese encephalitis in southern lowland areas.
Altitude sickness may be a problem. Rabies is present. For those at high risk, vaccination should be considered. If you are bitten, seek medical advice without delay.