Transatlantic spread of highly pathogenic avian influenza H5N1 by wild birds from Europe to North America in 2021

Valentina Caliendo, N.S. Lewis, A Pohlman, S.R. Baillie, AC Banyard, Martin Beer, IH Brown, R.A.M Fouchier, RDE Hansen, Thomas Lameris, AS Lang, S Laurendeau, O Lung, G Robertson, H.P. van der Jeugd, TN Alkie, K. Thorup, Mariëlle van Toor, Jonas Waldenström, C YasonThijs Kuiken*, Y Berhane

*Corresponding author for this work

Research output: Contribution to journal/periodicalArticleScientificpeer-review

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Abstract

Highly pathogenic avian influenza (HPAI) viruses of the A/Goose/Guangdong/1/1996 lineage (GsGd), which threaten the health of poultry, wildlife and humans, are spreading across Asia, Europe, Africa and North America but are currently absent from South America and Oceania. In December 2021, H5N1 HPAI viruses were detected in poultry and a free-living gull in St. John’s, Newfoundland and Labrador, Canada. Our phylogenetic analysis showed that these viruses were most closely related to HPAI GsGd viruses circulating in northwestern Europe in spring 2021. Our analysis of wild bird migration suggested that these viruses may have been carried across the Atlantic via Iceland, Greenland/Arctic or pelagic routes. The here documented incursion of HPAI GsGd viruses into North America raises concern for further virus spread across the Americas by wild bird migration.
Original languageEnglish
Article number11729
JournalScientific Reports
Volume12
DOIs
Publication statusPublished - 11 Jul 2022

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