Tonio Borg of Malta, the European Union's Health Commissioner, is spearheading the EU response to the Ebola outbreak. Gianluigi Guercia/AFP/Getty Images hide caption

itoggle caption Gianluigi Guercia/AFP/Getty Images

Boys show off their four-legged friends at a rabies vaccination drive set up by the Serengeti Health Initiative in the Bariadi District of Tanzania. Anna Czupryna/Courtesy of Serengeti Health Initiative hide caption

itoggle caption Anna Czupryna/Courtesy of Serengeti Health Initiative

Liberian physician Martha Zarway continues work in a temporary clinic while her original facility is disinfected. Tommy Trenchard for NPR hide caption

itoggle caption Tommy Trenchard for NPR

Abortions are legal in India. But many are performed by traditional midwives, called dais. Sometimes a dai rubs herbs on a woman's stomach or gives her plants to eat. Poulomi Basu for NPR hide caption

itoggle caption Poulomi Basu for NPR

Five ambulances, donated by the U.S. to help combat Ebola, are lined up after a ceremony attended by Sierra Leone's president, Ernest Bai Koroma, in Freetown on Sept. 10. Michael Duff/AP hide caption

itoggle caption Michael Duff/AP

Chlorine can stop the Ebola virus. So medical workers disinfect their hands often at the Doctors Without Borders treatment center in Kailahun, Sierra Leone. Carl De Souza/AFP/Getty Images hide caption

itoggle caption Carl De Souza/AFP/Getty Images

Workers unload medical supplies to fight the Ebola epidemic from a USAID cargo flight in Harbel, Liberia, in August. John Moore/Getty Images hide caption

itoggle caption John Moore/Getty Images

Medical workers at the John F. Kennedy Medical Center in Monrovia, Liberia, put on their protective suits before going to the high-risk area of the hospital, where Ebola patients are being treated, Sept. 3. Dominique Faget/AFP/Getty Images hide caption

itoggle caption Dominique Faget/AFP/Getty Images

Dr. Rick Sacra, 51, has been working on and off in Liberia for 15 years. He went back to Monrovia in August to help deliver babies. It's still unknown how he caught Ebola. Courtesy of SIM hide caption

itoggle caption Courtesy of SIM

US soldiers have intervened in during natural disasters such as the 2010 earthquake in Haiti. But a disease outbreak is more complicated. SSgt. Chad Chisholm/U.S. Dept. of Defense hide caption

itoggle caption SSgt. Chad Chisholm/U.S. Dept. of Defense

Not every business has been hurt by the Ebola epidemic: Stephen Kollie says his newspaper stand is thriving because people are hungry for the latest Ebola information. But many of his usual expatriate customers have left the country, he says. Tommy Trenchard for NPR hide caption

itoggle caption Tommy Trenchard for NPR

A security man takes visitors' temperatures Wednesday at the Transcorp Hilton hotel in Abuja, Nigeria, about 400 miles north of Port Harcourt. Afolabi Sotunde/Reuters/Landov hide caption

itoggle caption Afolabi Sotunde/Reuters/Landov

Workers wait to spray disinfectant on medical staff after they treat Ebola patients at a clinic run by Doctors Without Borders, in Monrovia, Liberia. Tommy Trenchard for NPR hide caption

itoggle caption Tommy Trenchard for NPR

Air traffic connections from West Africa to the rest of the world: While Guinea, Liberia and Sierra Leone don't have many flights outside the region, Nigeria is well-connected to Europe and the U.S. PLOS Currents: Outbreaks hide caption

itoggle caption PLOS Currents: Outbreaks