There have also been reported attacks on foreigners and incidents of theft in Zanzibar. Visitors should be aware that the islands are predominantly Islamic, and there is a need to behave and dress conservatively. Western parts of the country, near the borders of the Democratic Republic of Congo, Burundi and Rwanda are particularly subject to banditry flowing from conflict in the Great Lakes region. Travel in those areas, especially at night, should be avoided. Health Issues Medical facilities are poor and evacuation may be required in cases of serious illness or accident.
Malaria is prevalent in most parts of the country.
Outbreaks of cholera occur from time to time. Safe sex practices are essential. For information on prevalent diseases and inoculations, travellers should consult their doctor or a travel clinic. Travellers should check with their insurer to make sure that their policy meets their needs. In particular, travellers should be aware that some insurance companies will not pay claims which arise when travellers have disregarded the Government's travel advice.