Ebola not mutating into 'supervirus,' study finds

The Ebola virus that is causing the current outbreak in West Africa is not mutating as quickly as earlier reports had suggested, a new study finds. This finding helps allay fears that the virus could change into a more infectious or deadly form, the researchers said. In the study, published online today (March 26) in the journal Science, researchers compared virus samples from people in Africa who became infected with Ebola up to nine months apart. They found that the viruses' genetic sequences were almost identical, meaning that the virus had undergone relatively few mutations -- or changes in the genetic sequence -- over that time period, the researchers said