A police officer guards the home of a family under a 21-day Ebola quarantine in Freetown, Sierra Leone, back in March. Michael Duff/AP hide caption

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The man who died of Lassa fever flew from West Africa to New York's John F. Kennedy Airport. Spencer Platt/Getty Images hide caption

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The Ebola outbreak "overwhelmed" the World Health Organization and made it clear the agency must change, WHO's director-general, Dr. Margaret Chan, said Monday in Geneva. Fabrice Coffrini /AFP/Getty Images hide caption

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A boot-drying rack sits empty at the Ministry of Defense Ebola Treatment Unit in Monrovia. Jason Beaubien/NPR hide caption

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Moses Lasana recovered from Ebola, but he faces a range of medical issues and waves of pain. "The pain just come from one part of the body to another," he says. Jason Beaubien/NPR hide caption

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Caroline Williams is a community organizer in New Kru Town, a suburb of Monrovia. Here's how she got her message through to Liberians about preventing Ebola: "We talk to them, talk to them, talk to them. At last they started listening to us. All the methods that we been giving them, by God's will, they accepted." Jason Beaubien/NPR hide caption

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A nurse holds a young girl who was vaccinated at the kickoff of a national measles prevention campaign in Liberia. Jason Beaubien/NPR hide caption

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Lucy Barh, head of the Liberian Midwives Association, says of the impending end of the Ebola outbreak: "It is a joy, it is a joy. And I am so grateful to God. The Lord almighty has love for this nation. That is why we have come to this point." Jason Beaubien/NPR hide caption

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Liberian workers dismantle shelters in an Ebola treatment center in the Paynes Ville neighborhood of Monrovia. Doctors Without Borders closed the center last month because it was no longer needed. Zoom Dosso/AFP/Getty Images hide caption

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