The biggest danger in Africa is not terrorism or muggings - it is road travel. If you are injured in a crash you will not get any help - more likely you will just be robbed. If you are driving and injure a local - even if completely not your fault - you will be blamed and likely lynched. The standards of driving in most countries of Africa is appalling because there is no training or testing and to obtain a licence you just have to bribe an official, so driving is a constant risk.