Even without a single confirmed case, sub-Saharan Africa may be the region hardest hit outside of Asia by the spread of the coronavirus. The outbreak has shut down entire swathes of the Chinese economy, threatening world economic growth and curbing appetite for oil and metals that are the lifeline of many African nations. A slowdown in the No. 2 economy and a 5% drop in oil prices over one year could mean $4 billion in lost export revenue for sub-Saharan Africa, or the equivalent to 0.3% of its gross domestic product — more than any other continent outside of Asia, … Continued