Africa scientists are privately concerned the virus could mutate to become airborne, one expert has warned. So far 2,300 people have lost their lives to the disease with more than 4,300 cases recorded in West Africa in the last six months – the worst outbreak since the disease was discovered in 1976. The World Health Organisation has warned there may be thousands of new cases each week in Sierra Leone, Guinea and Nigeria by early October. Fifteen countries could be hit by the outbreak – putting the lives of 22 million people at risk, a new study has revealed.
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