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U.S. scientists will begin large-scale Ebola vaccine tests in West Africa within the next few weeks, officials announced Thursday.
The National Institutes of Health is launching a clinical trial of two different vaccines in partnership with the Liberian government, USA Today reports. In Sierra Leone, the Centers for Disease Control and Prevention researchers will test one vaccine.
NIH doctors will also test ZMapp, an experimental drug, in Liberia and the U.S.
Ebola has killed 8,668 people, out of 21,759 infected worldwide, according to the World Health Organization.