Many west and central African nationals don't require a visa. For applications or extensions, be sure to have a fist full of photos.
Malaria is a serious risk.
All water should be boiled or chemically treated, with boiling. This is also recommended for milk, which is not pasteurised. Avoid all other dairy products and ensure meat and fish are well cooked. Medical care is limited. In April 2000 an outbreak of meningitis was reported in northern Benin.