If it does n't , at least it gives us some level of protection over a window , which could be enormously valuable in protecting people from outbreaks at the time the outbreaks occur . '' A virologist says the trial is an essential first step and justifies some optimism . Score: 7 None of the volunteers suffered serious side effects , the National Institutes of Health says . The vaccine carries genetic material from the virus , but there 's no risk of Ebola infection .
A virologist says the trial is an essential first step and justifies some optimism . Score: 7 None of the volunteers suffered serious side effects , the National Institutes of Health says . The vaccine carries genetic material from the virus , but there 's no risk of Ebola infection .