EVENTS
FAQ
GeoSentinel is a globally active network of travel, tropical medicine, and infectious disease experts. For over 25 years, our researchers and clinicians have stood at the forefront of travel-related disease — from detecting and alerting to studying, monitoring, and treating.
Bringing Experts Together
We host quarterly meetings, annual conferences, and other member gatherings to facilitate knowledge exchange across geographic borders.
Exchanging Data & Information
Our international network of clinicians shares information in a timely manner, facilitating rapid and global public health responses to unusual and alarming outbreaks.
Publishing Our Findings
To influence policy and further research efforts into infectious disease, we publish our investigations in the leading journals of travel and tropical medicine.
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How to Contribute to Our Work
IMPACT
Our Network by the Numbers
25+
Years of Surveillance & Research
71+
Member Sites Around the World
134+
Peer-Reviewed Publications
Chronic Chagas Disease: A Descriptive Analysis from the GeoSentinel Network, 2014–2023
Lead Author: Clara Crespillo-Andújar
Published: 6 August 2026
Keeping Watch on Global Health
This in-depth interview* with Dr. Davidson Hamer, GeoSentinel Surveillance Lead, highlights how the GeoSentinel Network, a partnership between ISTM and the U.S. CDC, has spent more than 30 years detecting emerging infectious diseases through a global network of travel and tropical medicine clinics. By leveraging physician-confirmed diagnoses from travelers, migrants and refugees, GeoSentinel has helped identify outbreaks such as Zika, yellow fever and mpox, providing critical early warning signals that inform public health action worldwide. The article also explores the network’s growing role in molecular epidemiology, antimicrobial resistance surveillance and outbreak detection in an increasingly connected world.
* Originally published in the Harvard Advanced Leadership Initiative Social Impact Review
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