Outbreak of Highly Pathogenic Avian Influenza A(H5N1) Virus in Seals, St. Lawrence Estuary, Quebec, Canada
We describe an unusual mortality event caused by a highly pathogenic avian influenza (HPAI) A(H5N1) virus clade 2.3.4.4b involving harbor (Phoca vitulina) and gray (Halichoerus grypus) seals in the St. Lawrence Estuary, Quebec, Canada, in 2022. Fifteen (56%) of the seals submitted for necropsy were...
Published in: | Emerging Infectious Diseases |
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Language: | English |
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Centers for Disease Control and Prevention
2024
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Online Access: | https://doi.org/10.3201/eid3006.231033 https://doaj.org/article/d83148f91df14a76b3f7370fae65cad4 |
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ftdoajarticles:oai:doaj.org/article:d83148f91df14a76b3f7370fae65cad4 2024-09-15T18:30:22+00:00 Outbreak of Highly Pathogenic Avian Influenza A(H5N1) Virus in Seals, St. Lawrence Estuary, Quebec, Canada Stéphane Lair Louise Quesnel Anthony V. Signore Pauline Delnatte Carissa Embury-Hyatt Marie-Soleil Nadeau Oliver Lung Shannon T. Ferrell Robert Michaud Yohannes Berhane 2024-06-01T00:00:00Z https://doi.org/10.3201/eid3006.231033 https://doaj.org/article/d83148f91df14a76b3f7370fae65cad4 EN eng Centers for Disease Control and Prevention https://wwwnc.cdc.gov/eid/article/30/6/23-1033_article https://doaj.org/toc/1080-6040 https://doaj.org/toc/1080-6059 doi:10.3201/eid3006.231033 1080-6040 1080-6059 https://doaj.org/article/d83148f91df14a76b3f7370fae65cad4 Emerging Infectious Diseases, Vol 30, Iss 6, Pp 1133-1143 (2024) influenza avian influenza respiratory infections viruses encephalitis H5N1 Medicine R Infectious and parasitic diseases RC109-216 article 2024 ftdoajarticles https://doi.org/10.3201/eid3006.231033 2024-08-05T17:49:21Z We describe an unusual mortality event caused by a highly pathogenic avian influenza (HPAI) A(H5N1) virus clade 2.3.4.4b involving harbor (Phoca vitulina) and gray (Halichoerus grypus) seals in the St. Lawrence Estuary, Quebec, Canada, in 2022. Fifteen (56%) of the seals submitted for necropsy were considered to be fatally infected by HPAI H5N1 containing fully Eurasian or Eurasian/North American genome constellations. Concurrently, presence of large numbers of bird carcasses infected with HPAI H5N1 at seal haul-out sites most likely contributed to the spillover of infection to the seals. Histologic changes included meningoencephalitis (100%), fibrinosuppurative alveolitis, and multiorgan acute necrotizing inflammation. This report of fatal HPAI H5N1 infection in pinnipeds in Canada raises concerns about the expanding host of this virus, the potential for the establishment of a marine mammal reservoir, and the public health risks associated with spillover to mammals. Nous décrivons un événement de mortalité inhabituelle causé par un virus de l’influenza aviaire hautement pathogène A(H5N1) clade 2.3.4.4b chez des phoques communs (Phoca vitulina) et gris (Halichoerus grypus) dans l’estuaire du Saint-Laurent au Québec, Canada, en 2022. Quinze (56%) des phoques soumis pour nécropsie ont été considérés comme étant fatalement infectés par le virus H5N1 de lignées eurasiennes ou de réassortiment eurasiennes/nord-américaines. Un grand nombre simultané de carcasses d’oiseaux infectés par le H5N1 sur les sites d’échouement a probablement contribué à la contamination de ces phoques. Les changements histologiques associés à cette infection incluaient : méningo-encéphalite (100%), alvéolite fibrinosuppurée et inflammation nécrosante aiguë multi-organique. Cette documentation soulève des préoccupations quant à l’émergence de virus mortels, à la possibilité d’établissement de réservoirs chez les mammifères marins, et aux risques pour la santé publique associés aux propagations du virus chez les mammifères. Article in Journal/Newspaper Phoca vitulina Directory of Open Access Journals: DOAJ Articles Emerging Infectious Diseases 30 6 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
influenza avian influenza respiratory infections viruses encephalitis H5N1 Medicine R Infectious and parasitic diseases RC109-216 |
spellingShingle |
influenza avian influenza respiratory infections viruses encephalitis H5N1 Medicine R Infectious and parasitic diseases RC109-216 Stéphane Lair Louise Quesnel Anthony V. Signore Pauline Delnatte Carissa Embury-Hyatt Marie-Soleil Nadeau Oliver Lung Shannon T. Ferrell Robert Michaud Yohannes Berhane Outbreak of Highly Pathogenic Avian Influenza A(H5N1) Virus in Seals, St. Lawrence Estuary, Quebec, Canada |
topic_facet |
influenza avian influenza respiratory infections viruses encephalitis H5N1 Medicine R Infectious and parasitic diseases RC109-216 |
description |
We describe an unusual mortality event caused by a highly pathogenic avian influenza (HPAI) A(H5N1) virus clade 2.3.4.4b involving harbor (Phoca vitulina) and gray (Halichoerus grypus) seals in the St. Lawrence Estuary, Quebec, Canada, in 2022. Fifteen (56%) of the seals submitted for necropsy were considered to be fatally infected by HPAI H5N1 containing fully Eurasian or Eurasian/North American genome constellations. Concurrently, presence of large numbers of bird carcasses infected with HPAI H5N1 at seal haul-out sites most likely contributed to the spillover of infection to the seals. Histologic changes included meningoencephalitis (100%), fibrinosuppurative alveolitis, and multiorgan acute necrotizing inflammation. This report of fatal HPAI H5N1 infection in pinnipeds in Canada raises concerns about the expanding host of this virus, the potential for the establishment of a marine mammal reservoir, and the public health risks associated with spillover to mammals. Nous décrivons un événement de mortalité inhabituelle causé par un virus de l’influenza aviaire hautement pathogène A(H5N1) clade 2.3.4.4b chez des phoques communs (Phoca vitulina) et gris (Halichoerus grypus) dans l’estuaire du Saint-Laurent au Québec, Canada, en 2022. Quinze (56%) des phoques soumis pour nécropsie ont été considérés comme étant fatalement infectés par le virus H5N1 de lignées eurasiennes ou de réassortiment eurasiennes/nord-américaines. Un grand nombre simultané de carcasses d’oiseaux infectés par le H5N1 sur les sites d’échouement a probablement contribué à la contamination de ces phoques. Les changements histologiques associés à cette infection incluaient : méningo-encéphalite (100%), alvéolite fibrinosuppurée et inflammation nécrosante aiguë multi-organique. Cette documentation soulève des préoccupations quant à l’émergence de virus mortels, à la possibilité d’établissement de réservoirs chez les mammifères marins, et aux risques pour la santé publique associés aux propagations du virus chez les mammifères. |
format |
Article in Journal/Newspaper |
author |
Stéphane Lair Louise Quesnel Anthony V. Signore Pauline Delnatte Carissa Embury-Hyatt Marie-Soleil Nadeau Oliver Lung Shannon T. Ferrell Robert Michaud Yohannes Berhane |
author_facet |
Stéphane Lair Louise Quesnel Anthony V. Signore Pauline Delnatte Carissa Embury-Hyatt Marie-Soleil Nadeau Oliver Lung Shannon T. Ferrell Robert Michaud Yohannes Berhane |
author_sort |
Stéphane Lair |
title |
Outbreak of Highly Pathogenic Avian Influenza A(H5N1) Virus in Seals, St. Lawrence Estuary, Quebec, Canada |
title_short |
Outbreak of Highly Pathogenic Avian Influenza A(H5N1) Virus in Seals, St. Lawrence Estuary, Quebec, Canada |
title_full |
Outbreak of Highly Pathogenic Avian Influenza A(H5N1) Virus in Seals, St. Lawrence Estuary, Quebec, Canada |
title_fullStr |
Outbreak of Highly Pathogenic Avian Influenza A(H5N1) Virus in Seals, St. Lawrence Estuary, Quebec, Canada |
title_full_unstemmed |
Outbreak of Highly Pathogenic Avian Influenza A(H5N1) Virus in Seals, St. Lawrence Estuary, Quebec, Canada |
title_sort |
outbreak of highly pathogenic avian influenza a(h5n1) virus in seals, st. lawrence estuary, quebec, canada |
publisher |
Centers for Disease Control and Prevention |
publishDate |
2024 |
url |
https://doi.org/10.3201/eid3006.231033 https://doaj.org/article/d83148f91df14a76b3f7370fae65cad4 |
genre |
Phoca vitulina |
genre_facet |
Phoca vitulina |
op_source |
Emerging Infectious Diseases, Vol 30, Iss 6, Pp 1133-1143 (2024) |
op_relation |
https://wwwnc.cdc.gov/eid/article/30/6/23-1033_article https://doaj.org/toc/1080-6040 https://doaj.org/toc/1080-6059 doi:10.3201/eid3006.231033 1080-6040 1080-6059 https://doaj.org/article/d83148f91df14a76b3f7370fae65cad4 |
op_doi |
https://doi.org/10.3201/eid3006.231033 |
container_title |
Emerging Infectious Diseases |
container_volume |
30 |
container_issue |
6 |
_version_ |
1810471837408165888 |