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Scientists Use Mutations to Track Ebola Origins

Scientists are using mutations of the Ebola virus to track the deadly outbreak's origins. In study published in the journal Science, researchers worked backwards, tracking Ebola's 300 mutations to determine where the illness was first detected and where it has spread. The scientists identified the funeral of a traditional healer in Central Africa as the source from which of two different strains of Ebola spread into Sierra Leone. A third strain later appeared in the West...

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