At a hospital in Makeni nurses are protesting against the non-payment of hazard pay.
CDC says incident occurred due to a mix-up of two sets of vials.
In her televised Christmas Day message, Queen will also highlight red ceramic poppy tribute at Tower of London.
From the rise of Isis, to the outbreak of Ebola, to the new cold war between Russia and the west, IBTimes UK looks back at the biggest news stories of 2014
The virus has claimed the lives of over 7,533 people and has infected over 19,000 in West African nations.
Emergency decided to experiment with the drug, which regulates the heartbeat, following a study in August.
Vaccines show equal immune response in African populations as in US adults.
The epidemic impact has cost the country 0.4 ppt of GDP in 2014.
Deaths of Robin Williams, Peaches Geldof, Rik Mayall and Philip Seymour Hoffman among biggest search terms of 2014
IBTimes UK meets the survivors acting as a "councillor" to help other Ebola patients battle depression.
Christmas in the time of Ebola is a grim experience in Sierra Leone capital.
Vladimir Putin third on list of influential people.
As the situation in Sierra Leone shows no sign of relenting, health care workers are at increased risk of catching the deadly disease.
Freetown children's doctor dies as President Ernest Bai Koroma urged to provide better equipment.
He made the announcement during a visit to the National Institutes of Health.
The GLEaM model developed by EU researchers to forecast infectious diseases has predicted Ebola infections accurately.
The reality TV star promotes essential oils that claim to cure Ebola.
North Korea says US should be tried before international court for masterminding disease outbreak.
Ebola response team leader says two out of three countries worst affected are treating 70% of patients.
Tony Banbury refuses to confirm if targets have been reached in battle against deadly virus.
Public Health England said it was "unlikely" they had the deadly virus.
Guinean president Alpha Condé says France's assistance to tackle Ebola will be reviewed during Hollande's visit.