Research and Surveillance

Traveler-Based Genomic Surveillance of SARS-CoV-2 Variants

The Traveler Genomic Surveillance program, run by the Travelers’ Health Branch at CDC in partnership with Ginkgo Bioworks and XpresSpa Group, plays an important role in U.S. national surveillance by testing travelers to detect new variants entering the country and fill gaps in global surveillance.


GeoSentinel is a worldwide communication and data collection network for the surveillance of travel-related morbidity. These clinics are ideally situated to effectively detect geographic and temporal trends in morbidity among travelers, immigrants and refugees. It is supported by the Centers for Disease Control and Prevention as an International Society of Tropical Medicine member.

Global TravEpiNet (GTEN)

GTEN is a network of travel clinics across the United States. The network is aimed at improving the health of those who travel internationally and is supported by the Centers for Disease Control and Prevention.