The Ebola virus that caused the outbreak in Guinea has started to mutate, say scientists who are tracking the epidemic. It might get somewhat less deadly, but more contagious.
Researchers at the Institut Pasteur in France, which first identified the outbreak in March 2014, are investigating whether it could have become more contagious, the BBC reported.
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 analyze hundreds of blood samples from Ebola patients in Guinea.
It's not unusual for viruses to change over a period time. Ebola is an RNA virus, like HIV and influenza, which have a high rate of mutation. That makes the virus more able to adapt and raises the potential for it to become more contagious.
Another common concern was that while the virus has more time and more "hosts" to develop in, Ebola could mutate and eventually become airborne.
However, there's no evidence to suggest that this was happening, because the virus was still only passed through direct contact with infected people's body fluids.
Researchers are using a method called genetic sequencing to track changes in the genetic make-up of the virus. So far they have analyzed around 20 blood samples from Guinea.
Another 600 samples are being sent to the labs in the coming months.