World Country Guide

1
A yellow fever vaccination certificate is required by travellers arriving from infected areas.

2
Following WHO guidelines issued in 1973, a cholera vaccination certificate is no longer a condition of entry to Cambodia. However, cholera is a serious risk in this country and precautions are essential. Up-to-date advice should be sought before deciding whether these precautions should include vaccination as medical opinion is divided over its effectiveness; see the Health appendix for further information.

3
Immunisation against typhoid is recommended. Polio vaccination should be up-to-date.

4
Malaria risk exists all year outside the capital and close around Tonle Sap. Malaria does occur in the tourist areas of Angkor Wat. The malignant falciparum strain predominates and is reported to be highly resistant to chloroquine and sulfadoxine-pyrimethamine. Resistance to mefloquine has been reported from the western provinces. The recommended prophylaxis is mefloquine (including within the Angkor Wat area) but doxycycline in the western provinces.

Food & drink
All water should be regarded as being potentially contaminated. Water for drinking, brushing teeth or making ice should first be boiled or otherwise sterilised. Milk is unpasteurised and should be boiled. Powdered or tinned milk is available and is advised, but make sure that it is reconstituted with pure water. Avoid dairy products which are likely to have been made from unboiled milk. Only eat well-cooked meat and fish, preferably served hot. Pork, salad and mayonnaise may carry increased risk. Vegetables should be cooked and fruit peeled.

Other risks
Bilharzia (schistosomiasis) is present. Avoid swimming and paddling in fresh water; swimming pools which are well chlorinated and maintained are safe. Giardiasis, dysentery, typhoid fever and dengue fever are common throughout Cambodia. Hepatitis A occurs, hepatitis B is hyperendemic. Japanese encephalitis occurs in rural areas from May to October and is relatively common in the highlands.
Epidemics of avian influenza (bird flu) were reported in Asia in 2004 and again in 2005, and some human cases were confirmed. Visitors should avoid bird farms or markets, where contact with poultry might occur.
Rabies is present. For those at high risk, vaccination before arrival should be considered. If you are bitten, seek medical advice without delay. For more information, consult the Health appendix.

Health care
Health insurance, including emergency evacuation, is absolutely essential. Doctors and hospitals expect cash payments for any medical treatment.