An outbreak of the deadly Ebola virus in West Africa is out of control, but the World Health Organisation (WHO) said it can be stopped with more resources and tougher measures.<br /><br />The WHO has summoned an Emergency Committee between August 6-7 to decide if the outbreak constitutes a public health emergency of international concern and to recommend measures to tackle it.<br /><br />The worst hit are Sierra Leone, Liberia and Guinea. Nigeria recorded its first Ebola case last week. <br /><br />Since February, 1,300 people have been affected. More than 700 people have died from the virus, including the doctor leading Sierra Leone’s fight against the outbreak.<br /><br />Heads of state from the three worst-affected nations met to coordinate a regional response.<br /><br />Meanwhile a high security hospital ward in the US city of Atlanta prepared to receive one or possibly two American aid workers infected with Ebola while working in West Africa.<br /><br />Authorities say there is little risk that Ebola could move from Africa to Asia, America or Europe.<br /><br />There is no known cure for the disease.