Yes, an Italian brought it into Nigeria. I feel that if it took a hold in the poorer African countries, there's be utter carnage, as medical facilities and basic care are negligible.
Sadly I can't see it avoiding Africa as there will be travellers passing in and out, and the major cities there are thronged with people out in the streets. Hygiene is pretty poor anyway, and many of the people are not in perfect health.
Same applies to India I expect.
My husband is very worried for his huge family in Abidjan.