Ebola vaccine trial begins
Scientists have begun testing the effectiveness of an Ebola vaccine at the National Institutes of Health in Maryland.
Twenty healthy adult volunteers are participating in the trial. Researchers will observe the immune response of the volunteers and whether they experience any adverse reactions. The vaccine has already been tested in primate trials with good results.
According to the latest reports, more than 3,000 people in five countries have been infected with Ebola and more than 1,500 people have died.
The World Health Organization (WHO) has reported that without a prevention plan, the disease may worsen and continue to infect more than 20,000 people.