Traveler-Based Genomic Surveillance Data

What to know

  • As of May 14, 2025, this page summarizes data from individual travelers rather than pools of multiple travelers.
  • Data are updated weekly on Friday by 1pm ET. On federal holiday weeks, the data update may occur the following week.

Overview

Biosurveillance at international airports enables timely detection of communicable diseases of public health concern, including emerging variants of SARS-CoV-2, the virus that causes COVID-19, before new lineages circulate broadly within the United States.

CDC's Traveler-Based Genomic Surveillance (TGS) program includes data from:

  1. Nasal samples from arriving international air travelers, and
  2. Airplane wastewater from individual airplanes or from multiple airplanes at a consolidation point (triturator), collected at several major international airports across the United States.
For Everyone About Traveler-Based Genomic Surveillance

Data

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Content Source:
National Center for Emerging and Zoonotic Infectious Diseases (NCEZID)