US Ebola patient dies; airport screening expanded

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US Ebola patient dies; airport screening expanded
A man pushes a wheelbarrow containing a woman thought to be a victim of the Ebola virus at the Ebola treatment centre at Island hospital in Monrovia on October 2, 2014. Liberian President Ellen Johnson Sirleaf said Wednesday the Ebola outbreak that has devastated her country was showing signs of stabilising as the official death toll rose again.. AFP PHOTO / PASCAL GUYOT (Photo credit should read PASCAL GUYOT/AFP/Getty Images)
DALLAS, TX - OCTOBER 04: Eric Williams (C) , a U.S. Congressional candidate, Steve Oriabure (L), from the Organization of Nigerian Nationals, and Shadiya Abdi speak to the media outside the Ivy Apartment complex where the confirmed Ebola virus patient was staying on October 4, 2014 in Dallas, Texas. They spoke to the media on their concerns about how the Ebola case is affecting the community. (Photo by Joe Raedle/Getty Images)
A man leaves a wheelbarrow containuing a woman thought to be a victim of the Ebola virus at the Ebola treatment centre at Island hospital in Monrovia on October 2, 2014. Liberian President Ellen Johnson Sirleaf said Wednesday the Ebola outbreak that has devastated her country was showing signs of stabilising as the official death toll rose again.. AFP PHOTO / PASCAL GUYOT (Photo credit should read PASCAL GUYOT/AFP/Getty Images)
A man pushes a wheelbarrow containing a woman thought to be a victim of the Ebola virus at the Ebola treatment centre at Island hospital in Monrovia on October 2, 2014. Liberian President Ellen Johnson Sirleaf said Wednesday the Ebola outbreak that has devastated her country was showing signs of stabilising as the official death toll rose again.. AFP PHOTO / PASCAL GUYOT (Photo credit should read PASCAL GUYOT/AFP/Getty Images)
A man pushes a wheelbarrow containing a woman thought to be a victim of the Ebola virus, follwed by her relatives at the Ebola treatment centre at Island hospital in Monrovia on October 2, 2014. Liberian President Ellen Johnson Sirleaf said Wednesday the Ebola outbreak that has devastated her country was showing signs of stabilising as the official death toll rose again.. AFP PHOTO / PASCAL GUYOT (Photo credit should read PASCAL GUYOT/AFP/Getty Images)
A man pushes a wheelbarrow containing a woman thought to be a victim of the Ebola virus at the Ebola treatment centre at Island hospital in Monrovia on October 2, 2014. Liberian President Ellen Johnson Sirleaf said Wednesday the Ebola outbreak that has devastated her country was showing signs of stabilising as the official death toll rose again.. AFP PHOTO / PASCAL GUYOT (Photo credit should read PASCAL GUYOT/AFP/Getty Images)
DALLAS, TX - OCTOBER 02: A woman delivers bottled water and toilet paper to residents in a unit at the Ivy Apartments, where the confirmed Ebola virus patient was staying, on October 2, 2014 in Dallas, Texas. The first confirmed Ebola virus patient in the United States was staying with family members at The Ivy Apartment complex before being treated at Texas Health Presbyterian Hospital Dallas. State and local officials are working with federal officials to monitor other individuals that had contact with the confirmed patient. (Photo by Tom Pennington/Getty Images)
Thomas Duncan carries a woman HRS before she dies from #Ebola, then travels to TX. @CDCgov team now in Dallas. @AMHQ http://t.co/udwtA0eiGH
DALLAS, TX - OCTOBER 01: Texas Govenor Rick Perry answers questions related to the first confirmed case of the Ebola virus at Texas Health Presbyterian Hospital Dallas on October 1, 2014 in Dallas, Texas. State and local officials are working with federal officials to monitor other individuals that had contact with the confirmed patient. (Photo by Tom Pennington/Getty Images)
DALLAS, TX - SEPTEMBER 30: A general view of Texas Health Presbyterian Hospital Dallas where a patient has been diagnosed with the Ebola virus on September 30, 2014 in Dallas, Texas. The patient who had recently traveled to Dallas from Liberia marks the first case of this strain of Ebola that has been diagnosed outside of West Africa. (Photo by Mike Stone/Getty Images)
DALLAS, TX - SEPTEMBER 30: Dr. Edward Goodman, epidemiologist at Texas Health Presbyterian Hospital Dallas, answers questions during a media conference at Texas Health Presbyterian Hospital Dallas where a patient has been diagnosed with the Ebola virus on September 30, 2014 in Dallas, Texas. (Photo by Mike Stone/Getty Images)
DALLAS, TX - SEPTEMBER 30: Dr. Edward Goodman, epidemiologist at Texas Health Presbyterian Hospital Dallas, and Dr. Mark Lester, Southeast Zone clinical leader for Texas Health Resources, answer questions during a media conference at Texas Health Presbyterian Hospital Dallas where a patient has been diagnosed with the Ebola virus on September 30, 2014 in Dallas, Texas. (Photo by Mike Stone/Getty Images)
DALLAS, TX - SEPTEMBER 30: Dr. Edward Goodman, epidemiologist at Texas Health Presbyterian Hospital Dallas, and Dr. Mark Lester, Southeast Zone clinical leader for Texas Health Resources, answer questions during a media conference at Texas Health Presbyterian Hospital Dallas where a patient has been diagnosed with the Ebola virus on September 30, 2014 in Dallas, Texas. (Photo by Mike Stone/Getty Images)
DALLAS, TX - SEPTEMBER 30: A general view of Texas Health Presbyterian Hospital Dallas where a patient has been diagnosed with the Ebola virus on September 30, 2014 in Dallas, Texas. The patient who had recently traveled to Dallas from Liberia marks the first case of this strain of Ebola that has been diagnosed outside of West Africa. (Photo by Mike Stone/Getty Images)
DALLAS, TX - SEPTEMBER 30: Traffic moves past Texas Health Presbyterian Hospital Dallas where a patient has been diagnosed with the Ebola virus on September 30, 2014 in Dallas, Texas. The patient who had recently traveled to Dallas from Liberia marks the first case of this strain of Ebola that has been diagnosed outside of West Africa. (Photo by Mike Stone/Getty Images)
DALLAS, TX - SEPTEMBER 30: Traffic moves past Texas Health Presbyterian Hospital Dallas where a patient has been diagnosed with the Ebola virus on September 30, 2014 in Dallas, Texas. The patient who had recently traveled to Dallas from Liberia marks the first case of this strain of Ebola that has been diagnosed outside of West Africa. (Photo by Mike Stone/Getty Images)
DALLAS, TX - SEPTEMBER 30: Dr. Edward Goodman, epidemiologist at Texas Health Presbyterian Hospital Dallas, and Dr. Mark Lester, Southeast Zone clinical leader for Texas Health Resources, answer questions during a media conference at Texas Health Presbyterian Hospital Dallas where a patient has been diagnosed with the Ebola virus on September 30, 2014 in Dallas, Texas. (Photo by Mike Stone/Getty Images)
DALLAS, TX - SEPTEMBER 30: Dr. Edward Goodman, epidemiologist at Texas Health Presbyterian Hospital Dallas, answers questions during a media conference at Texas Health Presbyterian Hospital Dallas where a patient has been diagnosed with the Ebola virus on September 30, 2014 in Dallas, Texas. The patient who had recently traveled to Dallas from Liberia marks the first case of this strain of Ebola that has been diagnosed outside of West Africa. (Photo by Mike Stone/Getty Images)
DALLAS, TX - SEPTEMBER 30: A general view of Texas Health Presbyterian Hospital Dallas where a patient has been diagnosed with the Ebola virus on September 30, 2014 in Dallas, Texas. The patient who had recently traveled to Dallas from Liberia marks the first case of this strain of Ebola that has been diagnosed outside of West Africa. (Photo by Mike Stone/Getty Images)
DALLAS, TX - SEPTEMBER 30: Dr. Edward Goodman, epidemiologist at Texas Health Presbyterian Hospital Dallas, and Dr. Mark Lester, Southeast Zone clinical leader for Texas Health Resources, answer questions during a media conference at Texas Health Presbyterian Hospital Dallas where a patient has been diagnosed with the Ebola virus on September 30, 2014 in Dallas, Texas. (Photo by Mike Stone/Getty Images)
DALLAS, TX - SEPTEMBER 30: Traffic moves past Texas Health Presbyterian Hospital Dallas where a patient has been diagnosed with the Ebola virus on September 30, 2014 in Dallas, Texas. The patient who had recently traveled to Dallas from Liberia marks the first case of this strain of Ebola that has been diagnosed outside of West Africa. (Photo by Mike Stone/Getty Images)
DALLAS, TX - SEPTEMBER 30: Traffic moves past Texas Health Presbyterian Hospital Dallas where a patient has been diagnosed with the Ebola virus on September 30, 2014 in Dallas, Texas. The patient who had recently traveled to Dallas from Liberia marks the first case of this strain of Ebola that has been diagnosed outside of West Africa. (Photo by Mike Stone/Getty Images)
DALLAS, TX - SEPTEMBER 30: A general view of Texas Health Presbyterian Hospital Dallas where a patient has been diagnosed with the Ebola virus on September 30, 2014 in Dallas, Texas. The patient who had recently traveled to Dallas from Liberia marks the first case of this strain of Ebola that has been diagnosed outside of West Africa. (Photo by Mike Stone/Getty Images)
DALLAS, TX - SEPTEMBER 30: A medical transport van moves past Texas Health Presbyterian Hospital Dallas where a patient has been diagnosed with the Ebola virus on September 30, 2014 in Dallas, Texas. The patient who had recently traveled to Dallas from Liberia marks the first case of this strain of Ebola that has been diagnosed outside of West Africa. (Photo by Mike Stone/Getty Images)
DALLAS, TX - SEPTEMBER 30: Dr. Edward Goodman, epidemiologist at Texas Health Presbyterian Hospital Dallas, explains the precautions taken to prevent the spread of the Ebola virus during a media conference at Texas Health Presbyterian Hospital Dallas where a patient has been diagnosed with the disease on September 30, 2014 in Dallas, Texas. (Photo by Mike Stone/Getty Images)
DALLAS, TX - SEPTEMBER 30: Dr. Edward Goodman, epidemiologist at Texas Health Presbyterian Hospital Dallas, explains the precautions taken to prevent the spread of the Ebola virus during a media conference at Texas Health Presbyterian Hospital Dallas where a patient has been diagnosed with the disease on September 30, 2014 in Dallas, Texas. (Photo by Mike Stone/Getty Images)
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WASHINGTON (AP) -- The first person diagnosed with Ebola in the U.S. died Wednesday despite intense but delayed treatment, and the government announced it was expanding airport examinations to guard against the spread of the deadly disease.

RELATED: 5 things to know about the screenings

The checks will include taking the temperatures of hundreds of travelers arriving from West Africa at five major American airports.

The new screenings will begin Saturday at New York's JFK International Airport and then expand to Washington Dulles and the international airports in Atlanta, Chicago and Newark. An estimated 150 people per day will be checked, using high-tech thermometers that don't touch the skin.

The White House said the fever checks would reach more than 9 of 10 travelers to the U.S. from the three heaviest-hit countries - Liberia, Sierra Leone and Guinea.

RELATED: Spain: 6 in Madrid hospital for Ebola observation

President Barack Obama called the measures "really just belt and suspenders" to support protections already in place. Border Patrol agents now look for people who are obviously ill, as do flight crews, and in those cases the Centers for Disease Control and Prevention is notified.

It's unlikely a fever check would have spotted Thomas Eric Duncan, the Liberian man who died of Ebola in a Dallas hospital Wednesday morning. Duncan wasn't yet showing symptoms when he arrived in the U.S.

A delay in diagnosing and treating Duncan, and the infection of a nurse who treated an Ebola patient in Spain, have raised worries about Western nations' ability to stop the disease that has killed at least 3,800 people in West Africa.

RELATED: For Ebola victim, US trip followed years of effort

Speaking by teleconference with mayors and local officials, Obama said he was confident the U.S. could prevent an outbreak. But he warned them to be vigilant.

"As we saw in Dallas, we don't have a lot of margin for error," Obama said. "If we don't follow protocols and procedures that are put in place, then we're putting folks in our communities at risk."

Health workers are especially vulnerable to Ebola, which isn't airborne like the flu but is spread by contact with the bodily fluids of infected people.

RELATED: African leaders, UN, IMF, World Bank discuss Ebola

Around the world, health authorities scrambled to respond to the disease Wednesday:

- In Spain, doctors said they may have figured out how a nurse became the first person infected outside of West Africa in this outbreak. Teresa Romero said she remembered once touching her face with her glove after leaving the quarantine room where an Ebola victim was being treated. Romero's condition was stable.

-A social media campaign and a protest by Spanish animal rights activists failed to save Romero's dog, Excalibur. The pet was euthanized under court order out of fear it might harbor the Ebola virus.

- In Sierra Leone, burial teams returned to their work of picking up the bodies of Ebola victims, after a one-day strike to demand overdue hazard pay.

- Health workers in neighboring Liberia also were threatening a strike if their demands for more money and personal protective gear are not met by the end of the week. The average health worker salary is currently below $500 per month, even for the most highly trained staff.

-The World Bank estimated that the economic toll of the largest Ebola outbreak in history could reach $32.6 billion if the disease continues to spread through next year.

In Washington, Secretary of State John Kerry made a plea for more nations to contribute to the effort to stop the disease ravaging West Africa, saying the international effort was $300 million short of what's needed. He said nations must step up quickly with a wide range of support, from doctors and mobile medical labs to basic humanitarian aid such as food.

RELATED: News Guide: A quick look at Ebola developments

As for Duncan, the first victim to die in the U.S., he had shown no symptoms when he left Liberia for the United States but fell ill several days after arriving on Sept. 20.

His treatment and the effort to isolate anyone exposed to him were delayed because doctors failed to diagnose the disease the first time he showed up at a hospital emergency room with fever and abdominal pain and said he had been in West Africa. The case revealed gaps in the nation's system for isolating the virus and raised questions about whether he could have been saved if treated sooner. Early detection and treatment are crucial.

"I trust a thorough examination will take place regarding all aspects of his care," said the woman he had been staying with in Dallas, Louise Troh, the mother of his son.

"His suffering is over," she said.

In a sign of the unease the disease is causing, a sheriff's deputy who went into the apartment where Duncan had stayed was hospitalized after feeling ill. Fire Chief Mark Piland in suburban Frisco said the deputy had contact with some members of the family, but health officials said none of the family members had exhibited symptoms and wouldn't have been contagious.

There are no nonstop flights to the U.S. from the three West African countries affected by the Ebola outbreak. But Homeland Security Deputy Secretary Alejandro Mayorkas said his department can track passengers whose travel originated in any of the three, regardless of where they connected or if they were traveling on multiple, separate tickets.

CDC Director Tom Frieden cautioned Americans to expect cases of fever to turn up at airports that wouldn't be the deadly Ebola virus.

Checks of people in the outbreak zones have found about 1 in 500 show a fever, but none of those so far have been infected with Ebola. Many had malaria, Frieden said.

Liberia's United Nations peacekeeping mission said Wednesday that an international member of its medical team had contracted Ebola, the second member of the mission to come down with the disease. The first died on Sept. 25.

Dallas Ebola Patient Thomas Eric Duncan Dies and More
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