No special vaccination certificates are required, except by travellers entering the Philippines from an area infected with yellow fever. There is a malaria risk in parts of the Philippines and visitors should seek medical advice before travelling. Urban areas are generally considered risk-free. Dengue fever is a risk throughout the country; the best prevention is to avoid mosquito bites. Tap water is not safe to drink and ice in drinks should be avoided; cholera is a risk in the country and precautions are advised. Rabies is endemic. Medical care is good in the major cities, although very expensive, however it is limited in the remoter areas. Comprehensive medical insurance is advised.