Scientists
tracking the spread of the Ebola in West Africa have warned the virus is
showing signs of mutating, and could become more contagious.
A team of
researchers from the Institute Pasteur in France first identified the outbreak
in Guinea, in March last year. Patient
zero - the first person to be infected - has been identified as two-year-old
Emile Ouamouno from the rural village of Meliandou. He died four days after he fell ill with a
sky-high fever and vomiting in December 2013. Just weeks later his sister succumbed to the
disease, followed by their mother and grandmother.
From there
the virus spread, before the scientists at Institute Pasteur identified it as
Ebola three months later after it was reported to the health authorities.
The team
have since been tracing the virus' spread through Guinea, to establish if the
disease could become more contagious.
They have
started the process of examining hundreds of blood samples from Ebola patients
in the West African nation where the first cases struck in December 2013.
Human
geneticist Dr Anavaj Sakuntabhai, told the BBC: 'We know the virus is changing
quite a lot.
'That's
important for diagnosing and for treatment. We need to know how the virus (is
changing) to keep up with our enemy.'
He told
Radio 4's Today programme viruses have to 'fight a balance' between infecting
people and spreading.
'We have
seen several cases that don't have any symptoms at all when infected,' he said.
'These people may be the ones who could spread the virus better, we do not know
yet.
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