Alumni in Action

Kelly Callahan

Kelly Callahan

Before accepting her current position as director of the Center's Trachoma Control Program, Ms. Callahan was assistant director of program support for the Carter Center Health Programs.

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Mark Chen

Mark Chen

After graduating from Rollins, LCDR Mark Chen joined the Food and Drug Administration as a civil servant investigator in San Jose, CA.

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Chris Holliday

Christopher Holliday

Dr. Holliday is particularly interested in chronic disease prevention, epidemiology, population health, and population mental health.

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Heather Ingold

Heather (Yori) Ingold

Heather Ingold, MPH, lives in Geneva, Switzerland, where she works as a programme manager for Unitaid, a hosted partnership of the World Health Organization (WHO). 

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Ali Khan

Dr. Ali S. Khan

Dr. Khan is the new dean of the college of public health at the University of Nebraska medical center after a 23-year career at CDC.

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Jean O'Connor

Dr. Jean O' Connor

Dr. Jean C. O’Connor is an adjunct associate professor at the Rollins School of Public Health at Emory University.

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Meredith Rentz

Meridith Rentz

Meridith's professional experience includes working with Emory Internal Medicine and Deloitte Consulting's Healthcare Strategy and Operations practice.

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Brigette Ulin

Brigette Ulin

Brigette Ulin, MPH, is the chief of the Applied Research & Translation Branch and director of the Prevention Research Centers Program at the CDC.

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Hilarie Warren

Hilarie Warren

Hilarie Warren, MPH, CIH, conducts on-site assessments for health, safety, and environmental hazards at construction sites and industrial facilities around Georgia as an industrial hygienist for the State of Georgia’s OSHA Consultation Program.

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