Who's who in the Ebola outbreak?

Updated 4:26 PM ET, Sun October 19, 2014
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Thomas Eric Duncan is a Liberian resident who flew to Dallas to visit family and friends. He was the first Ebola patient diagnosed in the United States. He passed away on October 8. From Thomas Eric Duncan's Facebook
Nina Pham, 26, is a Dallas nurse involved in Duncan's care who was diagnosed with Ebola, marking the first known transmission of Ebola in the United States. She had on a gown, gloves, mask and a shield during her multiple visits with Duncan, but there was a breach in protocol, health officials said. Nina Pham/From Facebook
Amber Vinson, 29, was the second nurse to be diagnosed with Ebola after treating Duncan at Texas Health Presbyterian Hospital. Akron Public Schools
A nurse's assistant identified as Teresa Romero Ramos tested positive for Ebola after treating a Spanish missionary with the deadly virus in Madrid, Spain. Her case is the first recorded transmission of Ebola outside of West Africa during this outbreak. EPA/PACMA
Centers for Disease Control and Prevention Director Dr. Tom Frieden has led the effort to evacuate and treat American patients and has helped U.S. hospitals prepare for a possible outbreak at home. The CDC also has teams working in West Africa assisting with contact tracing and infection control. Johnny Clark/AP
Dr. Kent Brantly contracted Ebola while working as the medical director for Samaritan's Purse Ebola Care Center in Monrovia, Liberia. He was the first person to be treated with the experimental drug ZMapp and was the first patient to be brought home to the United States. Chip Somodevilla/Getty Images
Nancy Writebol is an American missionary with SIM USA who also contracted Ebola in Liberia. She, too, was given ZMapp and flown back to the United States for treatment. Chris Keane/Getty Images
Dr. Margaret Chan has been the World Health Organization's director-general since 2006. Originally from China, she has a strong background in communicable diseases and infection control. ALAIN GROSCLAUDE/AFP/Getty Images
Texas Gov. Rick Perry has overseen the state's response to Duncan's case. State and local health officials are working with the CDC to monitor around 50 individuals who had contact with the Ebola patient while he was contagious. Tom Pennington/Getty Images
American Dr. Rick Sacra was delivering babies in a hospital in Liberia when he contracted Ebola. He was the first Ebola patient to be treated in The Nebraska Medical Center's biocontainment unit. UMMS
American Ashoka Mukpo is a freelance cameraman who was working for NBC News in Liberia when he became ill with Ebola symptoms. He was flown to The Nebraska Medical Center on October 6.
Liberian President Ellen Johnson Sirleaf has been very outspoken about the international community's response to the Ebola outbreak in West Africa. Liberia has had the most cases and deaths of all the countries affected by the outbreak. John Moore/Getty Images
Alpha Conde is the president of Guinea, which has had more than 1,100 cases, including 739 deaths. Andrew Burton/Getty Images
Ernest Bai Koroma is the president of Sierra Leone, which has had more than 2,400 cases, including 623 deaths. SAUL LOEB/AFP/Getty Images
The well-known Dr. Sheik Humarr Khan, left, died after contracting Ebola while helping patients in Sierra Leone. AP
Joanne Liu is the international president of Medecins Sans Frontieres, also known as Doctors Without Borders. MSF has been on the ground in West Africa since the outbreak started and has played a key role in treating thousands of patients in Guinea, Liberia and Sierra Leone. Salvatore Di Nolfi/Keystone/AP
Spanish priest Manuel Garcia Viejo was diagnosed with Ebola while working in Sierra Leone. He was flown back to Spain for treatment before he died. A nurse's assistant who treated him in Spain is believed to have contracted the virus as well. San Juan de Dios Order/AP
Patrick Sawyer collapsed after getting off a plane in Lagos, Nigeria, and later died. Health officials believe he was the start of the small outbreak in that country. courtesy sawyer family
Dr. Gorbee Logan is one of two doctors for more than 85,000 people in Bomi County, Liberia. Logan says he has successfully treated Ebola patients with anti-retroviral drugs, which are commonly used to treat HIV. John Bonifield/CNN
Fatu Kekula has cared for four family members who had Ebola, keeping three alive without infecting herself using trash bags, rubber boots and a mask. John Bonifield/CNN
Maj. Gen. Darryl Williams is commander of the U.S. military's Operation United Assistance in West Africa. The U.S. will be sending around 3,600 troops to the region to help fight the Ebola outbreak. PASCAL GUYOT/AFP/Getty Images
Valerie Amos, the United Nations under-secretary-general for humanitarian affairs and emergency relief coordinator, has been leading the U.N.'s response to the outbreak. FABRICE COFFRINI/AFP/Getty Images