The UN special envoy on Ebola says he hopes that the outbreak can be brought under control within three months.
David Nabarro told the BBC the number of Ebola cases was currently increasing exponentially, but greater community awareness would help contain the virus.People were becoming aware that isolating those infected was the best way to prevent transmission, he added.
So far, there have been more than 8,300 confirmed and suspected cases of Ebola, and at least 4,033 deaths.
'Quite frightening' Most fatalities - 4,024 - have occurred in the west African countries of Guinea, Liberia and Sierra Leone. Cases have also been reported in Nigeria, Senegal, Spain and the US.
Mr Nabarro said that the number of new cases was "quite frightening", as the spread of the disease was currently accelerating.
At the beginning, many west African communities did not understand that the outbreak was an infectious disease, he said.
"I think we've got much better community involvement [now] which leads me to believe that getting it under control within the next three months is a reasonable target," he said.
Tulip Mazumdar describes the protective measures taken by journalists covering the Ebola crisis
"By under control I mean... the numbers of new cases each week
diminishes compared with the previous week to the point where there is
no new transmission."The Ebola virus is spread by direct contact with the bodily fluids of an infected person or animal.
Meanwhile, New York's JFK airport began screening passengers from Liberia, Sierra Leone and Guinea for the Ebola virus on Saturday, in an attempt to stem the outbreak.
Passengers from those countries will have their temperatures taken and have to answer a series of questions.
Checks at O'Hare in Chicago, Newark, Washington's Dulles and Atlanta's airport will begin in the coming days.
The screening system is being introduced after the first person to be diagnosed with Ebola in the US died in Texas on Wednesday.
In other developments:
- The UK government's top medical adviser says the country should expect a "handful" of Ebola cases in the coming months
- Relatives of the first person to die of the virus in the US, Thomas Duncan, complain that he received sub-standard treatment
- The Confederation of African Football says it has no plans to change the January-February schedule of the African Nations Cup, after hosts Morocco called for a postponement over Ebola fears
- Liberian health workers say they will go on strike on Monday if the government has not resolved the issue of risk and hazard allowance paid to them by then
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