At least 80 confirmed Ebola deaths

Doctors Without Borders says the Ebola outbreak in Guinea is unprecedented and hard to control.

Health specialists prepare for work in an isolation ward for patients at the Doctors Without Borders facility in southern Guinea. Picture: AFP.

JOHANNESBURG - Medical charity Doctors Without Borders says the Ebola outbreak in Guinea is unprecedented.

The spread of the deadly disease, with cases hundreds of kilometres apart, is making it extremely difficult to control, with at least 80 people now confirmed dead.

Eighty people have died from the deadly haemorrhagic virus that's already spread to Guinea's capital and at least one of its neighbours.

Doctors Without Borders, which is leading international efforts to set up isolation units, says they are facing an epidemic of unprecedented magnitude in terms of the distribution of cases.

The medical charity's coordinator Mariano Lugli says the geographic spread that's now seen seven cases with two deaths in neighbouring Liberia greatly complicates the task of those fighting the disease.

Spread of the Ebola virus

Senegal has closed its borders with Guinea.