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 hide caption

itoggle caption Pablo Martinez Monsivais/AP

The media is all over this story: Ebola in NYC! Don Weiss, a doctor with the New York City Health Department, faces microphones outside the bowling alley visited by the physician who tested positive for the virus. John Minchillo/AP hide caption

itoggle caption John Minchillo/AP

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 Census Adam Cole and Ryan Kellman/NPR hide caption

itoggle caption Adam Cole and Ryan Kellman/NPR

At the onset of symptoms, Dr. Adaora Igonoh (center) and her colleagues began drinking oral rehydration solution. It doesn't taste great but they say it helped them survive Ebola. They each downed over a gallon a day for nearly a week. Andrew Esiebo/Courtesy of WHO hide caption

itoggle caption Andrew Esiebo/Courtesy of WHO

A rogues gallery of the viruses (left to right) that cause MERS, SARS, and influenza. Niaid; 3D4Medical; Niaid/Science Source hide caption

itoggle caption Niaid; 3D4Medical; Niaid/Science Source

Thai surrogate mother Pattaramon Chanbua with her baby Gammy, who was born with Down Syndrome. An Australian couple who'd arranged for Pattaramon to serve as their surrogate rejected the child. Nicolas Asfouri/AFP/Getty Images hide caption

itoggle caption Nicolas Asfouri/AFP/Getty Images

This experimental Ebola vaccine, developed by the U.S. government, is just one of several undergoing small-scale, preliminary testing. University of Maryland School of Medicine/AP hide caption

itoggle caption University of Maryland School of Medicine/AP

After losing most of his family to Ebola, health worker Alexander Kollie (right) is building a new life with son Kollie James, the 1,000th survivor of the disease to be cared for by Doctors Without Borders. Katy Athersuch/Courtesty of Doctors Without Borders hide caption

itoggle caption Katy Athersuch/Courtesty of Doctors Without Borders