A vaccine against the Ebola virus is urgently needed, and several companies are racing to test their experimental vaccines in an effort to halt the spread of the deadly viral disease. Ebola has sickened more than 20,000 people in West Africa, and killed at least 8,200, according to the World Health Organization (WHO).
Experts estimate that at least 100,000 doses of vaccine are needed to protect frontline health care workers. And at least 12 million doses would be needed to vaccinate all adults in the three worst-affected countries of Guinea, Liberia and Sierra Leone, according to the WHO. [2014 Ebola Outbreak: ...
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