Liberia: Ebola's impact on Africa economy might be less than feared - World Bank

• Impact likely closer to $3-$4 billion-region's chief economist

• African tourism has been "ravaged" by Ebola

• Nearly half of Liberia workforce no longer working

• Lower oil prices a concern for Africa fiscal stability (Adds separate report on impact on Liberia workforce)

By Joe Brock

JOHANNESBURG, Nov 19 (Reuters) - The cost of the Ebola epidemic for Sub-Saharan Africa's economy is likely to be closer to $3 billion-$4 billion and not the worst-case scenario of $32 billion, the World Bank's chief economist for the continent said on Wednesday.