Health workers wearing protective clothing prepare themselves before to carrying an abandoned dead body presenting with Ebola symptoms at Duwala market in Monrovia August 17, 2014.[Photo/Agencies]

Nigeria appears to be making progress in containing the disease. The country has 12 confirmed cases of Ebola, all of which stem from direct contact with the Liberian-American man who flew to Nigeria late last month while ill. He infected several health workers before dying.

Since then three others have died in Nigeria from Ebola, according to figures released over the weekend.

One Nigerian doctor has survived the disease and was sent home Saturday night and five others confirmed with Ebola have almost fully recovered, said the Health Minister Onyebuchi Chukwu in a statement Saturday night.

The most important part of containing the disease is to track all those who had contact with Ebola patients and to closely monitor them in order to quarantine if they show any symptoms. Nigeria had 242 people under surveillance but now 61 have been cleared and released, after completing the 21-day period without showing any signs of Ebola, said the health ministry.

In East Africa, Kenya will bar passengers traveling from the three West African countries badly hit by the Ebola outbreak. The suspension is effective midnight Tuesday for all ports of entry for people traveling from or through Sierra Leone, Guinea and Liberia, said Kenya's Health Ministry. Nigeria was not included in the ban, which also allows entry to health professionals and Kenyans returning from those countries.

Following the government's announcement Saturday, Kenya Airways said it would suspend flights to Liberia and Sierra Leone. Kenya Airways, a major transport provider in Africa flies more than 70 flights a week to West Africa.

Several airlines have already suspended flights to Sierra Leone, Guinea and Liberia, including British Airways, Emirates Airlines, Arik Air and ASKY Airlines.

Officials in Cameroon, which borders Nigeria, announced Friday it would suspend all flights from all four Ebola-affected countries. Korean Air announced on Thursday it would temporarily halt its service to Kenya despite the fact there are no cases of Ebola in the country.