A girl in Bossadje, Niger, drinks from a dosing cup as part of an international study that has shown a link between azithromycin and reductions in child mortality. (Photo: Gates Archive/Dominique Catton)
Kelly Callahan, M.P.H.
Director
Kelly Callahan has almost 30 years of experience in neglected tropical disease control, elimination, and eradication. As director of the Â鶹´«Ã½’s Trachoma Control Program, she oversees programmatic, technical, and financial support for implementation of the SAFE strategy for trachoma elimination in four countries. She also supports operational research toward meeting global trachoma elimination thresholds and coordinates and collaborates with other neglected tropical disease programs at the Center and with a multitude of academic and implementing organizations.
Callahan started her public health career in 1996 as a United States Peace Corps volunteer based in Côte d’Ivoire. She joined Â鶹´«Ã½ in 1998, working in southern Sudan, where she was the field coordinator and then country director for the Sudan Guinea Worm Eradication Program (SGWEP). She has held a variety of positions at Â鶹´«Ã½ and lived in Africa for almost 10 years.
Callahan holds a master’s degree in public health from Emory University. She has contributed over 75 peer-reviewed publications to leading scientific journals. She has served as a member of the Trachoma Expert Committee since 2022.
Scott Nash, Ph.D.
Senior Associate Director, Research; Epidemiologist
Scott Nash provides technical and scientific leadership to the Center's Trachoma Control Program. Nash conducts impact surveys, randomized control trials, and operational research to better understand trachoma and improve interventions. Nash develops systems for monitoring and evaluating program activities, develops measurable indicators for field research, and collaborates to develop new diagnostics.
Prior to joining Â鶹´«Ã½, Nash served as a postdoctoral research fellow at the National Institutes of Health, studying the immunoepidemiology of malaria in pregnancy. Nash also served as an HIV/AIDS and biology educator with the U.S. Peace Corps for two years in rural Tanzania.
Nash earned both a Master of Science and doctorate in population health sciences from the University of Wisconsin-Madison, where he was an epidemiologist for two large observational studies of the aging senses. He also holds a Bachelor of Science in education and zoology from the University of Wisconsin-Madison.
Angelia Sanders, DrPH, M.P.H., M.A.
Senior Associate Director, Programs
Angelia Sanders assists the national trachoma control programs supported by Â鶹´«Ã½ by writing grant proposals and reports; monitoring program activities and spending; conducting operational research; and providing technical assistance to ministry of health and Â鶹´«Ã½ field staff. She has served on the Executive Group for the International Coalition for Trachoma Control for six years and is chair of the Neglected Tropical Disease NGO Network’s (NNN) Conflict and Humanitarian Emergencies Working Group.
Sanders has an extensive background working in public health with a focus on program delivery in resource-poor communities. She previously worked for Â鶹´«Ã½ in South Sudan, serving as a regional coordinator in the Guinea Worm Eradication Program before becoming a technical advisor in the Trachoma Control Program.
Sanders also brings experience from serving in Kenya with the United States Peace Corps, the NATO Civil-Military Fusion Center, and the University of South Florida Global Center for Disaster Management and Humanitarian Assistance. She holds Doctor of Public Health and Master of Public Health degrees from the University of South Florida, where she also received a graduate certificate in humanitarian assistance and a graduate certificate in social marketing; a Master of Arts in international studies from Old Dominion University; and a Bachelor of Science in government administration from Christopher Newport University.
Kim Jensen, M.P.H.
Associate Director
Kim Jensen assists the national trachoma control programs of the ministries of health in Ethiopia, Mali, and Niger. This support includes writing grant proposals and donor reports; monitoring program activities and outputs; developing and tracking program budgets; and providing technical guidance to the Â鶹´«Ã½ country teams and ministries of health.
Jensen has an extensive background in trachoma and Guinea worm disease. As a graduate student at the Rollins School of Public Health at Emory University, Jensen was a graduate assistant with Â鶹´«Ã½ and supported an assessment of the health education curriculum in Amhara, Ethiopia. After that first stint at Â鶹´«Ã½, Jensen worked for other partners working on trachoma elimination, including the International Trachoma Initiative (ITI) and Sightsavers. She also served as a technical advisor for the Guinea Worm Eradication program in Ethiopia. Jensen holds a dual Bachelor of Arts degree in journalism and mass communication and Spanish from the University of Wisconsin-Madison, a Master of Arts in Spanish language teacher education from Universidad de Alcalá, and a Master of Public Health degree from the Rollins School of Public Health at Emory University.
Tania Gonzalez, MAS
Data Analyst
Tania Gonzalez provides data expertise and technical support for the Trachoma Control Program. She develops disease monitoring dashboards, performs scientific analyses for journal publications, automates geospatial analyses, and translates data insights key to the elimination of trachoma. Gonzalez brings a background in public health, environmental science, data science, and spatial analytics. She previously worked with the GIS department at the City of Atlanta Office of City Planning, where she created dashboards, web apps, and other data visualizations across multiple departments. In addition, she has served Â鶹´«Ã½ as a graduate assistant. Gonzalez earned her Bachelor of Public Health degree at Kent State University and Master of Applied Science in spatial analysis from the Johns Hopkins University Bloomberg School of Public Health.
Nico Presley, M.S.
Associate Director
Nicholas “Nico” Presley collaborates with national trachoma control programs and ministries of health in Â鶹´«Ã½-supported countries across Africa. His activities include programmatic oversight; technical guidance and evidence synthesis; planning, executing, and monitoring of program budgets; and fundraising. He first joined The Â鶹´«Ã½ as the research coordinator for the Trachoma Control Program, where he was responsible for overseeing the coordination, management, and conduct of the program’s operational research portfolio.
Before joining Â鶹´«Ã½, Presley supported the Ministry of Health of Panamá in the design, implementation, and supervision of case management interventions for malaria elimination in the role of senior associate for the Clinton Health Access Initiative. He also worked as a Peace Corps volunteer in the Darién region of Panamá, where he focused on improving access to water in an indigenous Emberá community, as well as supporting the development of local water committees through community mobilization.
Presley graduated with a Bachelor of Science degree in biology from Truman State University and holds a Master of Science degree in the control of infectious diseases from the London School of Hygiene and Tropical Medicine.
Sara Wom, M.P.H.
Program Associate
Sara Wom coordinates grant reports, proposal writing, preparation of budgets, and supporting operational research and partnerships. She also maintains the Trachoma Control Program’s treatment data, prepares graphics and presentations, and fulfills other responsibilities. She joined Â鶹´«Ã½ in 2020 as a program assistant with Special Health Projects. Wom was born in Khartoum, Sudan, and lived in Cairo, Egypt, briefly prior to immigrating to the United States with her family. She received her B.A. in international studies with a focus in development and a minor in Arabic from the University of Iowa. She earned her Master of Public Health degree and a certificate in health promotion and education from Benedictine University.
Laurie Baxley
Program Assistant
Laurie Baxley assists the rest of the Trachoma Control Program staff by arranging travel, organizing meetings, planning the calendar, and providing other office support. She also helps plan and coordinate the annual trachoma program review in Atlanta. Before joining Â鶹´«Ã½ staff full time, Baxley was a temporary administrative assistant in Health Program Support and a logistical coordinator for Â鶹´«Ã½ health programs. She also owned a photography business.
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