In this photo taken on Monday, March 2, 2015, a health care worker prepares a colleague's Ebola virus protective gear at an Ebola virus clinic operated by the International Medical Corps in Makeni, Sierra Leone. The World Health Organization says Thursday, March 12, 2015, its tally of Ebola deaths has passed the grim milestone of 10,000, mostly in West Africa. (Michael Duff, AP / AP)
In this photo taken on Monday, March 2, 2015, a health care worker...
In this photo taken on Thursday, Feb. 26, 2015, a boy listens to school classes broadcast over the radio, due to the Ebola virus outbreak in Sierra Leone school's across the country have been closed in an effort to prevent the spread of the virus in Freetown, Sierra Leone. The World Health Organization says Thursday, March 12, 2015, its tally of Ebola deaths has passed the grim milestone of 10,000, mostly in West Africa. (Michael Duff, AP / AP)
In this photo taken on Thursday, Feb. 26, 2015, a boy listens to...
In this photo taken on Friday, Feb. 27, 2015, a man stand near his home next to a board stating that his home is under quarantine, twenty one days are the quarantine time, due to the Ebola virus in the Kambia district, in Kambia, Sierra Leone. The World Health Organization says Thursday, March 12, 2015, its tally of Ebola deaths has passed the grim milestone of 10,000, mostly in West Africa. (Michael Duff, AP / AP)
In this photo taken on Friday, Feb. 27, 2015, a man stand near his...
FILE - In this photo taken Thursday Nov. 20, 2014, Kissi Dembadouno sits in his home after he lost his wife, daughter and two grandchildren to the Ebola virus, in the Guinean village of Meliandou, some 400 miles (600 kms) south-east of Conakry, Guinea. The World Health Organization says Thursday, March 12, 2015, its tally of Ebola deaths has passed the grim milestone of 10,000, mostly in West Africa. (Jerome Delay, AP / AP)
FILE - In this photo taken Thursday Nov. 20, 2014, Kissi Dembadouno...
FILE - In this file photo taken on Thursday Oct. 2, 2014, Mercy Kennedy, 9, cries after she learned her mother had died, outside her home in Monrovia, Liberia, Kennedy's mother was taken away by an ambulance to an Ebola ward the day before. The World Health Organization says Thursday, March 12, 2015, its tally of Ebola deaths has passed the grim milestone of 10,000, mostly in West Africa. (Jerome Delay, AP / AP)
FILE - In this file photo taken on Thursday Oct. 2, 2014, Mercy...
FILE - In this file photo taken on Sunday, Sept. 21, 2014, a pig with it's young walks past an ambulance used at the Connaught Hospital as part of their Ebola virus fleet, during a three-day lockdown to prevent the spread on the Ebola virus in Freetown, Sierra Leone. The World Health Organization says Thursday, March 12, 2015, its tally of Ebola deaths has passed the grim milestone of 10,000, mostly in West Africa. (Michael Duff, AP / AP)
FILE - In this file photo taken on Sunday, Sept. 21, 2014, a pig...
In this photo taken Tuesday, Jan. 24, 2015, health workers provide education to people about the Ebola virus on prevention and general health tips in Conakry, Guinea. The World Health Organization says Thursday, March 12, 2015, its tally of Ebola deaths has passed the grim milestone of 10,000, mostly in West Africa. (Youssouf Bah, AP / AP)
In this photo taken Tuesday, Jan. 24, 2015, health workers provide...
FILE - In this file photo taken on Friday, Feb. 27, 2015, President Barack Obama meets with Liberian President Ellen Johnson Sirleaf in the Oval Office of the White House in Washington, to discuss the ongoing response to the Ebola outbreak in Western Africa and Liberia's recovery from the deadly virus. The World Health Organization says Thursday, March 12, 2015, its tally of Ebola deaths has passed the grim milestone of 10,000, mostly in West Africa. (Evan Vucci, AP / AP)
FILE - In this file photo taken on Friday, Feb. 27, 2015, President...
FILE - In this file photo from Nov. 15, 2014, medical workers in protective suits transport Dr. Martin Salia, a surgeon working in Sierra Leone who had been diagnosed with Ebola, from a jet that brought him from Sierra Leone to a waiting ambulance that will take him to the Nebraska Medical Center in Omaha, Neb. The World Health Organization says Thursday, March 12, 2015, its tally of Ebola deaths has passed the grim milestone of 10,000, mostly in West Africa. (Nati Harnik, AP / AP)
FILE - In this file photo from Nov. 15, 2014, medical workers in...
FILE - File photo taken on Tuesday, Sept. 2, 2014, health workers sprays the body of a amputee suspected of dying from the Ebola virus with disinfectant, in a busy street in Monrovia, Liberia. The World Health Organization says Thursday, March 12, 2015, its tally of Ebola deaths has passed the grim milestone of 10,000, mostly in West Africa. (Abbas Dulleh, AP / AP)
FILE - File photo taken on Tuesday, Sept. 2, 2014, health workers...
In this photo taken on Saturday, March 7, 2015, men carry the remains inside a drum covered with white cloth, of Ebola virus dead that were cremated in the past, into a hut during a traditional ceremony on the outskirts of Monrovia, Liberia. The World Health Organization says Thursday, March 12, 2015, its tally of Ebola deaths has passed the grim milestone of 10,000, mostly in West Africa. (Abbas Dulleh, AP / AP)
In this photo taken on Saturday, March 7, 2015, men carry the...
In this photo taken on Friday, Oct. 31, 2014, hearth workers carry the body of a man from his house after he died from suspected Ebola virus in the Siah Town area on the outskirts of Monrovia, Liberia. The World Health Organization says Thursday, March 12, 2015, its tally of Ebola deaths has passed the grim milestone of 10,000, mostly in West Africa. (Abbas Dulleh, AP / AP)
In this photo taken on Friday, Oct. 31, 2014, hearth workers carry...
FILE - In this file photo taken on Tuesday, Aug. 12, 2014, the body of a man being sprayed with disinfectant as he is suspect of dying from the Ebola virus in Monrovia, Liberia.The World Health Organization says Thursday, March 12, 2015, its tally of Ebola deaths has passed the grim milestone of 10,000, mostly in West Africa. (Abbas Dulleh, AP / AP)
FILE - In this file photo taken on Tuesday, Aug. 12, 2014, the...
FILE - In this file photo taken on Thursday, Aug. 21, 2014, a Liberia soldier, right, controls a man as he and other people receive food aid at, West Point after government forces closed the area down preventing all people from leaving or entering due to fears about the Ebola virus spreading in Monrovia, Liberia. The World Health Organization says Thursday, March 12, 2015, its tally of Ebola deaths has passed the grim milestone of 10,000, mostly in West Africa. (Abbas Dulleh, AP / AP)
FILE - In this file photo taken on Thursday, Aug. 21, 2014, a...
FILE - In this file photo taken on Thursday, July 31, 2014, a close up photo of news paper headlines focusing on Ebola story's, including a news paper, left, reading 'Burn all bodies' in the city of Monrovia, Liberia. The World Health Organization says Thursday, March 12, 2015, its tally of Ebola deaths has passed the grim milestone of 10,000, mostly in West Africa. (Jonathan Paye-Layleh, AP / AP)
FILE - In this file photo taken on Thursday, July 31, 2014, a...
In this photo taken on Friday, Feb. 27, 2015, Health workers carry the remains for a child that they suspect died from the Ebola virus near the village of Gbah on the outskirts of Monrovia, Liberia. The World Health Organization says Thursday, March 12, 2015, its tally of Ebola deaths has passed the grim milestone of 10,000, mostly in West Africa. (Abbas Dulleh, AP / AP)
In this photo taken on Friday, Feb. 27, 2015, Health workers carry...