US Study: One Vaccine Dose Keeps Monkeys From Getting Ebola

When news got out about an Ebola vaccine that seemed 100 percent effective, you could just about hear the cheers from people around the world who have been following the horrific outbreak in West Africa. But because of the way the study was done, some people have questioned the results. Now another study, this one with monkeys, shows the same outcome. VOA's Carol Pearson has more.

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