Early detection of SARS-CoV-2 variants using traveler-based genomic surveillance at four US airports, September 2021- January 2022

  1. Renee D. Wegrzyn
  2. Grace D. Appiah
  3. Robert Morfino,
  4. Scott R. Milford
  5. Allison Taylor Walker
  6. Ezra T. Ernst
  7. William W. Darrow
  8. Siayo Lisa Li
  9. Keith Robison
  10. Duncan MacCannell
  11. Dongjuan Dai
  12. Brintha P. Girinathan
  13. Allison L. Hicks
  14. Bryan Cosca
  15. Gabrielle Woronoff
  16. Alex M. Plocik
  17. Birgitte B. Simen
  18. Leah Moriarty
  19. Sarah Anne J. Guagliardo
  20. Martin S. Cetron
  21. Cindy R. Friedman
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Abstract

We enrolled arriving international air travelers in SARS-CoV-2 genomic surveillance, using molecular testing of pooled nasal swabs, and sequencing positive samples for viral lineage. Traveler-based genomic surveillance provided early warning variant detection; we reported the first U.S. Omicron BA.2 and first BA.3 in North America, weeks before next reported detection.

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