The Ebola outbreak in West Africa is much worse than official figures show, and other countries are unintentionally making it harder to control, Centers for Disease Control and Prevention Director Dr. Tom Frieden told CNN on Tuesday.
The call for action came as a missionary organization announced that another one of its doctors working in Liberia has tested positive for the Ebola virus.
"We've seen outbreaks of Ebola before. This is the first epidemic spreading widely through many countries, and it is spiraling out of control," said Frieden, who recently returned from a trip to the region. "It's bad now, much worse than the numbers show. It's going to get even worse in the very near future."
More than 3,000 people have been infected by Ebola in Liberia, Guinea, Sierra Leone and Nigeria since the outbreak began in December, according to the World Health Organization. At least 1,552 have died.
Making it worse, Frieden said, is that other countries are turning their backs on those coming from countries where the outbreak is strongest, even if they don't realize it.
Measures to restrict flights and border crossings into the countries facing the outbreak were designed to contain the spread, but are having a paradoxical effect, he explained.
"This is making it really hard to get help in and to respond effectively to the outbreak," he said on CNN's "New Day."
"What we're seeing is a spiraling of cases, a hugely fast increase in cases, that's harder and harder to manage," he said. "The more we can get in there and tamp that down, the fewer cases we'll have in the weeks and months to come."
Frieden sounded the same alarm last week during a visit to Liberia.
The sooner the world unites to help West Africa, the safer the world will be, he said.
At a news conference later Tuesday, Frieden said Ebola is not spreading through the Ebola treatment centers, but through two main avenues: poor burial practices, and exposure in the general health care systems in West Africa.
Both of these areas can be made more safe, but it will take immediate action on a scale greater than at present.
U.S. doctor infected
An American missionary doctor working in the Liberian capital has tested positive for Ebola, his organization, SIM USA, said Tuesday. The doctor, whose name was not released, was not treating Ebola patients and it's not known how he contracted the disease, SIM USA said.
One of the first Americans to contract the disease, Nancy Writebol, also was working on a SIM USA mission. Writebol was the second human Ebola patient on U.S. soil after being flown in for specialty treatment in Atlanta. She was subsequently released on August 19.
The unnamed American doctor immediately isolated himself upon the onset of symptoms, and is currently in an Ebola isolation unit, the group said.
"The doctor is doing well and is in good spirits," SIM USA said in a statement.
Aid groups urge support
In a strongly-worded statement to U.N. members, the president of Doctors Without Borders, Dr. Joanne Liu, criticized the "global coalition of inaction" in response to the Ebola outbreak.
"States with the required capacity have a political and humanitarian responsibility to come forward and offer a desperately needed, concrete response to the disaster unfolding in front of the world's eyes," Liu said. "Rather than limit their response to the potential arrival of an infected patient in their countries, they should take the unique opportunity to actually save lives where immediately needed, in West Africa."
Ebola treatment and management centers run by aid groups find themselves overwhelmed by the ever-increasing number of people with symptoms of Ebola, Liu said.
Centers run by her own group have had to turn away sick people because they are too full, she said.
West Africa harvests at risk
Food prices in West African countries is rising, as panic buying ensues amid fears that the food supply will be limited.
The Food and Agriculture Organization of the U.N. reported that disruption to food trade and marketing have curtailed the availability of some food. The result has been hoarding that results in further food shortages and price hikes of staple foods, the agency said.
"Even prior to the Ebola outbreak, households in some of the affected areas were spending up to 80 percent of their incomes on food," Vincent Martin, Head of FAO's Dakar-based Resilience Hub, said in a news release. "Now these latest price spikes are effectively putting food completely out of their reach. This situation may have social repercussions that could lead to subsequent impact on the disease containment."
Another effect of the Ebola outbreak has been restrictions on migration and movement inside the region, creating labor shortages on farms, the FAO said.
The main harvest season for crops such as rice and maize is weeks away, and what was predicted to be a favorable harvest is now at risk, the agency said.
Governments express concern
Liberian President Ellen Johnson Sirleaf said Monday that the massive Ebola outbreak
in her country "remains grave."
"Our health delivery system is under stress. The international community couldn't respond quickly," she told CNN.
But she also sounded hopeful. She said that conditions are slowly improving and that the world is responding to the epidemic, realizing the catastrophe that could unfold if the virus were to spread beyond Africa's borders.
The West African nation of Senegal confirmed its first Ebola case last week, one week after closing its border with Guinea.
Senegal is the fifth country in the region to report the Ebola virus.
A separate Ebola outbreak, unrelated to the one in West Africa, was reported by the Democratic Republic of Congo.
The World Health Organization on Tuesday confirmed that samples from the Ebola cases in the Democratic Republic of Congo were distinct from what is affecting the other countries.
The news is reassuring the WHO said, because it means that the epidemic in West Africa has not spread to Central Africa.