The French researchers at the Institut Pasteur, who first discovered the outbreak in March 2014, are working on whether that cannot be spread nationwide once more.
More than 22,000 people have been infected with Ebola and 8,795 have died in Guinea, Sierra Leone and Liberia.
Scientists are starting to analyse hundreds of blood samples from Ebola patients in Guinea.
They are tracking how the virus is changing and trying to establish whether it's able to jump more easily from person to person
The human geneticist Dr Sakuntabhai announced: "We know the virus is changing quite a lot. That's important for diagnosing (new cases) and for treatment. We need to know how the virus (is changing) to keep up with our enemy.
We've now seen several cases that don't have any symptoms at all, asymptomatic cases," said Anavaj Sakuntabhai."
These people may be the people who can spread the virus better, but we still don't know that yet. A virus can change itself to less deadly, but more contagious and that's something we are afraid of.
Image:© Getty
Source: NOW!;
