U.N. agencies and medical charities such as Doctors Without Borders (MSF) have scrambled to help Guinea - one of the world's poorest countries - cope with the virus, amid fears it might spill across borders into neighbouring West African nations.
Liberia, which shares a border with southeastern Guinea, reported at five deaths this week from suspected infections in people who had come across the frontier to seek treatment. Sierra Leone has also uncovered two deaths in the border town of Boidu suspected to be linked to Ebola, one of the most lethal infectious diseases known to man.
Laboratory tests have so far only confirmed 13 cases of the disease, from 45 tests. More samples, some of them from Sierra Leone and Liberia, have been sent for examination.
"The epidemic is not spreading to other regions," Guinean Health Minister Remy Lamah told Reuters by telephone from the affected area in Guinea's remote Forest region. "Medical equipment has been shipped in. MSF is helping us to control the outbreak."
An MSF spokesperson said the number of suspected infections had risen by just two from Tuesday to 88, according to government figures. Four more people died, however, bringing the death toll to 63.
MSF flew in 33 tonnes of medical equipment at the weekend, enabling the creation of an isolation ward in Gueckedou, the epicentre of the outbreak. Ten patients with Ebola symptoms were receiving treatment there, MSF said.
Another isolation facility is being set up in the town of Macenta to deal with suspected cases there, said the medical charity, which is reinforcing its emergency team of 30 staff.
BAN ON BUSHMEAT, BATS
Since its discovery in 1976 in what is now Democratic Republic of Congo, only around 2,200 cases of Ebola have been recorded. Of those, 1,500 were fatal.
The outbreak of mysterious haemorrhagic fever was first detected in Guinea in February. Scientists have since identified it as the most virulent Zaire strain of the Ebola virus.
The virus is believed to reside primarily in bats between rare outbreaks in humans. Some experts believe it may have been carried by bats from central Africa, where it is more common.
In an effort to stop the transmission of the disease, Guinea has banned the sale and consumption of bats and other types of bush meat, and banned public funerals for those killed. Volunteers from the Guinean Red Cross were disinfecting the homes of victims and dealing with infected bodies.
The disease incubates for up to three weeks and its symptoms are similar to malaria and cholera, making it difficult to detect in West Africa, where such diseases are endemic.
The virus initially causes raging fever, headaches, muscle pain, conjunctivitis and weakness, before moving into more severe phases of causing vomiting, diarrhoea and haemorrhages. There is no vaccine and no known cure.
A team of Guinean and MSF officials were visiting villages advising people on precautionary measures. Infection can be reduced by simple measures such as washing hands, wearing gloves, face masks and protective goggles.
The teams were travelling by foot seeking to identifying people who have been in direct contact with Ebola victims and to isolate people showing symptoms of the disease, MSF said.
International SOS - a leading medical and travel security services company - said business travellers and expatriates working outside the healthcare sector had a low risk of contracting the rare disease. Several international mining companies are active in Guinea, Sierra Leone and Liberia.
It was the first recorded fatal outbreak of Ebola in West Africa. A non-fatal case was documented in a scientist studying an Ebola outbreak in chimpanzees in the Tai national park in Ivory Coast in 1994.