I think there ARE jobs for veterinarians throughout other African countries in the non profit sector, groups trying to save the wildlife, animal preserves, foreign universities studying wild animals. I'm sure your knowledge translates somewhat to wild animals? You must have entered this field because it's what you want to do. Start with World Wildlife Fund, the largest animal preserves, and if that fails, the bigger cities, even if it means moving far away to be a vet of domesticated animals. New Zealand and Australia, perhaps, if you are willing to go even further.

If you want to stay near home, then I am sorry I don't know of scholarships for medical schools.

I would also start a group of all the vets who are living at home with no jobs. You can help each other, more often than compete. You could design a website or a Facebook page. You never know what works.