Data sources: David Ropeik/Harvard University, National Weather Service, World Health Organization, Northeastern University Laboratory for the Modeling of Biological and Socio-Technical Systems, National Geographic, United States CensusAdam Cole and Ryan Kellman/NPRhide caption
The nursing staff get a break at the Ebola care center run by Doctors Without Borders in Foya, Liberia. The center has helped stop the spread of the virus.Michealeen Doucleff/NPRhide caption
Mary Mallon, known as "Typhoid Mary," was immune to the typhoid she carried. Working as a cook, she spread the disease in New York and ended up quarantined on Brother Island (above) for more than two decades.
Bettmann/Corbis
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Dallas-area resident James Faulk turned his yard into an Ebola treatment center for Halloween. But he has a serious side: his Twitter account raises funds for Doctors Without Borders, a group active in the fight against the virus.
Tom Pennington/Getty Images
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Domitilia, 57, is a diabetic patient in the Dominican Republic who contracted tuberculosis. She's now cured of TB after two years of treatment.
Javier Galeano/The Union
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NBC cameraman Ashoka Mukpo, 33, contracted Ebola in Liberia, arrived in Nebraska for care on Oct. 6 and was released from the hospital Oct. 22.
Taylor Wilson/Courtesy of Nebraska Medicine
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Taylor Wilson/Courtesy of Nebraska Medicine
An Ebola health alert is displayed at the entrance to Bellevue Hospital in New York City, where Dr. Craig Spencer was quarantined after showing symptoms consistent with the virus.
Bryan Thomas/Getty Images
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Dr. Jonas Salk stands in the University of Pittsburgh laboratory in which he developed a vaccine for polio. The photo was taken in 1956.
Bettmann/Corbis
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The nursing staff get a break at the Ebola care center run by Doctors Without Borders in Foya, Liberia. The center has helped stop the spread of the virus.
Michealeen Doucleff/NPR
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New Jersey Governor Chris Christie (right) and New York Governor Andrew Cuomo both insist on mandatory quarantine for healthcare workers who've had contact with Ebola patients. Christie wants them held in a medical facility; Cuomo says a home quarantine with outside monitoring would do.
Mark Lennihan/AP
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Congolese editor Solange Lusiku Nsimire says journalism is a powerful way of building and preserving her troubled country's "collective memory."
Sylvain Muyali/Courtesy of IWMF
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After the 2010 earthquake in Haiti, the Red Cross sent text messages across the country with health tips, locations of aid and safety reminders. A similar system is being used in Sierra Leone to combat Ebola.
International Federation of Red Cross and Red Crescent Societies
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International Federation of Red Cross and Red Crescent Societies
Dr. Bhadelia spent 12 days caring for the sick in an Ebola ward. Her experience has convinced her that she must return.
Courtesy of Nahid Bhadelia
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Ebola survivor Salome Karwah holds a 10-month-old baby whose parents are being treated for Ebola inside the MSF Ebola Treatment center ELWA 3 in Monrovia, Liberia.
John W. Poole/NPR
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A female sanitation worker wears standard gear for a Doctors Without Borders Ebola center. The outfit includes rubber boots, goggles, a face mask, a hood, three layers of gloves, a Tyvek suit and thick rubber apron. No exposed skin is allowed. She was photographed in Monrovia, Liberia.
John W. Poole/NPR
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Patient Nina Pham is hugged by Dr. Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases, outside of the National Institutes of Health in Bethesda, Md., on Friday. Pham was discharged after testing free of Ebola.
Pablo Martinez Monsivais/AP
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