The fear of Ebola is already starting to affect economies, the president of the World Bank said on Thursday.

In some countries, for example, people are already refusing to clean planes for fear of contracting the virus. The World Bank has estimated the cost to Africa alone at some $32.6 billion.

"What we've seen, the so-called aversion behavior ... the $32.6 billion is not because of the virus itself, 80 to 90 percent of that is the aversion behavior, the stop in productivity, people don't go to work, kids don't go to school, there's no flights coming in, trade slows down," Kim said in a CNBC interview.



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