The Ebola outbreak that has killed more than 1,000 people in West Africa could last another six months, Doctors Without Borders has said
Meanwhile a medical worker acknowledged that the true death toll is unknown. Tarnue Karbbar, who works for the aid group Plan International in northern Liberia, said response teams simply are not able to document all the cases erupting. Many of the sick are still being hidden at home by their relatives, too fearful of going to an Ebola treatment centre.
Others are buried before the teams can get to the area, he said. In the last several days, some 75 cases have emerged in a single district.
"Our challenge now is to quarantine the area to successfully break the transmission," he said, referring to the Voinjama area.
Many people may be hiding, but many are also finally beginning to seek treatment, as more centres open up.
Beds in such centres are filling up faster than they can be provided, evidence that the outbreak in West Africa is far more severe than the numbers show, Gregory Hartl, a spokesman for World Health Organisation (WHO) in Geneva, said.
There are 40 beds at a treatment centre that Doctors Without Borders, known as Medecins Sans Frontieres or MSF, recently took over in one quarantined county in Liberia but 137 people have flocked there, packing the hallways until they can be sorted into those who are infected and those are not, said MSF's international president, Joanne Liu.
"It's absolutely dangerous," said Ms Liu, who recently returned from Guinea, Liberia and Sierra Leone. "With the massive influx of patients that we had over the last few days, we're not able to keep zones of patients anymore. Everybody is mixed."
The charity will have 300 beds available once several dozen open in the coming days, and Ms Liu said it cannot possibly provide any more.
Mr Hartl, of the WHO, noted that an 80-bed treatment centre opened in Liberia's capital in recent days filled up immediately. The next day, dozens more people showed up to be treated.
Ms Liu likened the situation to a state of war because the "frontline" was always moving and unpredictable. She said the outbreak could last six more months.
"We're running behind a train that is going forward," Ms Liu said. "And it literally is faster than what we're bringing in terms of a response."
The UN health agency warned yesterday that the official counts of 1,069 dead and 1,975 infected may still "vastly underestimate the magnitude of the outbreak".
It said extraordinary measures are needed "on a massive scale to contain the outbreak in settings characterised by extreme poverty, dysfunctional health systems, a severe shortage of doctors, and rampant fear".
Ebola causes a high fever, bleeding and vomiting. It has no cure and no licensed treatment and has been fatal in at least 50% of the cases, health experts say.
The disease is usually found in eastern or central Africa, typically in rural, isolated communities, where outbreaks tend to be "self-limiting", Mr Hartl said.
By contrast, the current outbreak spread quickly to cities and the capitals of Guinea, Liberia and Sierra Leone, making it difficult to stop.