Testing is underway for a vaccine that would protect people against the worst strains of both Ebola and the Marburg viruses.
Johnson and Johnson is spearheading the research and announced the first stages of testing the vaccine in people as of yesterday.
A spokesperson said screening of volunteers started late last week in Maryland where the trials will continue.
If the vaccine proves effective, it would be given in two doses.
The first would prime the immune system, and then a booster shot would increase the body's response.
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