Travellers are advised to get a vaccination against hepatitis A, typhoid, yellow fever and polio. Those arriving from an infected country are required to hold a yellow fever vaccination certificate. Malaria is rampant in the country and travellers should avoid mosquito bites at all times. There is a high risk of HIV/AIDS reported; travellers should take all necessary precautions. Cholera outbreaks are common throughout the country and visitors are advised to avoid tap water. Food prepared by roadside vendors should be avoided. Full health insurance and carrying basic medical supplies is advisable.