Drugmakers are racing to develop vaccines and drugs to address the worst outbreak of Ebola in history. It's unclear who will pay for their products, but companies are betting that governments and aid groups will foot the bill.
There are no proven drugs or vaccines for Ebola, in large part because the disease is so rare that up until now it's been hard to attract research funding. And the West African nations hardest hit by the outbreak are unlikely to be able to afford new Ebola vaccines and drugs.
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