ABUJA (AFP) - Nigeria on Friday said that two more people had tested positive for Ebola, taking the total number of confirmed cases of the deadly virus in the country to 14, including five deaths.

"Nigeria has now recorded the first two cases of Ebola Virus Disease in secondary contacts of the index case," Health Minister Onyebuchi Chukwu told a news conference in Abuja.

"The two patients are spouses of primary contacts of the Liberian American," the minister said, referring to Mr Patrick Sawyer, who died in a private Lagos hospital on July 25. The 40-year-old Liberian Finance Ministry consultant was taken for treatment after arriving at Lagos airport visibly unwell on a flight from Monrovia.

Two doctors and two nurses who treated Mr Sawyer, as well as an official from the West African regional bloc ECOWAS who picked him up from the airport, died from the disease.

The World Health Organization said on Tuesday that it was encouraged by the situation in Nigeria, given that all of the confirmed cases came from a single chain of transmission.

Five people confirmed to have the virus have been "successfully managed and discharged", Mr Chukwu said, adding that the two new cases were among four currently being treated at an isolation unit.

Ebola has killed 1,350 people this year, with most deaths in Guinea, Liberia and Sierra Leone.