The blood from 2007 outbreak survivors is used for research to use antibodies to fight against Ebola virus.
Another Ebola case has been reported, just a day after West Africa has been declared Ebola-free.
The World Health Organization announced Friday that there were two confirmed cases of Ebola in Guinea.
Liberia is once again free from Ebola for the second time this year, the World Health Organization declared on Thursday.
Lions may soon be extinct in West Africa, new research says. According to a study published in the scientific journal PLOS One, the West African lion community has suffered a "catastrophic collapse," with only about 400 total --- 250 of which are breeding age --- left in the region.
