Thursday 02 October 2014 07.38
People in Sierra Leone are being infected with Ebola at the rate of five every hour, according to the charity Save the Children.
It said 765 new cases were reported last week and the rate of infection means healthcare demands are far outstripping supply.
The charity said that as soon as the authorities get on top of the virus in one area, it emerges in another.
Country director in Sierra Leone Rob MacGillivray said it is very difficult to give accurate figures on the number of children who are dying from Ebola as monitoring systems are unable to keep pace with the outbreak.
So far, more than 3,300 people have died in the Ebola outbreak in West Africa.
There have been 7,178 confirmed cases, with Sierra Leone, Liberia and Guinea suffering the most.
Sierre Leone president Ernest Bai Koroma is among those attending an international conference in London today to raise raise awareness about Ebola.
Participating countries will discuss how the global community can provide an effective response to the crisis in West Africa.
They are expected to announce pledges to support the international effort to defeat the disease, with both the UK and Sierra Leone urging them to contribute with extra funding for hospital beds and staff.
Experts have warned that the outbreak has developed at an unprecedented scale with the current rate of infection standing at 1.7, meaning that for every ten people that contract the virus a further 17 will also be infected.
The aim is to get the rate down to one, and eventually below one, in the fight to stop the spread of the deadly disease.
More than 40 British military personnel and aid experts are now working in Sierra Leone and more than 160 NHS staff are also due to travel there after answering a call for volunteers to help fight the disease earlier this month.
Experts believe they have a 90-day window to halt the spread of Ebola, which could otherwise have infected around 1.5 million people by January.
At least 3,700 children have lost one or both parents to the virus since the start of the outbreak, according to preliminary UNICEF figures, with fears that this could have doubled by the middle of next month.
The charity warned that many children are also being rejected by their surviving relatives for fear of infection.
