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Recreational drug users recruited for clinical abuse trials

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Sudanese military bombs don't spare civilians, aid workers

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PBS News Hour

How long-lasting is promising Ebola vaccine protection?

A clinical trial in Guinea found that an experimental vaccine was 75 to 100 percent effective in blocking new infections of the Ebola virus. Hari Sreenivasan speaks to Dr. Anthony Fauci of the National Institutes of Health about the vaccine.
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