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Avian influenza overview March – April 2023

Between 2 March and 28 April 2023, highly pathogenic avian influenza (HPAI) A(H5Nx) virus, clade 2.3.4.4b, outbreaks were reported in domestic (106) and wild (610) birds across 24 countries in Europe. Poultry outbreaks occurred less frequently compared to the previous reporting period and compared t...

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Autores principales: Adlhoch, Cornelia, Fusaro, Alice, Gonzales, José L, Kuiken, Thijs, Mirinaviciute, Grazina, Niqueux, Éric, Stahl, Karl, Staubach, Christoph, Terregino, Calogero, Broglia, Alessandro, Kohnle, Lisa, Baldinelli, Francesca
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10245295/
https://www.ncbi.nlm.nih.gov/pubmed/37293570
http://dx.doi.org/10.2903/j.efsa.2023.8039
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author Adlhoch, Cornelia
Fusaro, Alice
Gonzales, José L
Kuiken, Thijs
Mirinaviciute, Grazina
Niqueux, Éric
Stahl, Karl
Staubach, Christoph
Terregino, Calogero
Broglia, Alessandro
Kohnle, Lisa
Baldinelli, Francesca
author_facet Adlhoch, Cornelia
Fusaro, Alice
Gonzales, José L
Kuiken, Thijs
Mirinaviciute, Grazina
Niqueux, Éric
Stahl, Karl
Staubach, Christoph
Terregino, Calogero
Broglia, Alessandro
Kohnle, Lisa
Baldinelli, Francesca
collection PubMed
description Between 2 March and 28 April 2023, highly pathogenic avian influenza (HPAI) A(H5Nx) virus, clade 2.3.4.4b, outbreaks were reported in domestic (106) and wild (610) birds across 24 countries in Europe. Poultry outbreaks occurred less frequently compared to the previous reporting period and compared to spring 2022. Most of these outbreaks were classified as primary outbreaks without secondary spread and some of them associated with atypical disease presentation, in particular low mortality. In wild birds, black‐headed gulls continued to be heavily affected, while also other threatened wild bird species, such as the peregrine falcon, showed increased mortality. The ongoing epidemic in black‐headed gulls, many of which breed inland, may increase the risk for poultry, especially in July–August, when first‐year birds disperse from the breeding colonies. HPAI A(H5N1) virus also continued to expand in the Americas, including in mammalian species, and is expected to reach the Antarctic in the near future. HPAI virus infections were detected in six mammal species, particularly in marine mammals and mustelids, for the first time, while the viruses currently circulating in Europe retain a preferential binding for avian‐like receptors. Since 13 March 2022 and as of 10 May 2023, two A(H5N1) clade 2.3.4.4b virus detections in humans were reported from China (1), and Chile (1), as well as three A(H9N2) and one A(H3N8) human infections in China. The risk of infection with currently circulating avian H5 influenza viruses of clade 2.3.4.4b in Europe remains low for the general population in the EU/EEA, and low to moderate for occupationally or otherwise exposed people.
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spelling pubmed-102452952023-06-08 Avian influenza overview March – April 2023 Adlhoch, Cornelia Fusaro, Alice Gonzales, José L Kuiken, Thijs Mirinaviciute, Grazina Niqueux, Éric Stahl, Karl Staubach, Christoph Terregino, Calogero Broglia, Alessandro Kohnle, Lisa Baldinelli, Francesca EFSA J Scientific Report Between 2 March and 28 April 2023, highly pathogenic avian influenza (HPAI) A(H5Nx) virus, clade 2.3.4.4b, outbreaks were reported in domestic (106) and wild (610) birds across 24 countries in Europe. Poultry outbreaks occurred less frequently compared to the previous reporting period and compared to spring 2022. Most of these outbreaks were classified as primary outbreaks without secondary spread and some of them associated with atypical disease presentation, in particular low mortality. In wild birds, black‐headed gulls continued to be heavily affected, while also other threatened wild bird species, such as the peregrine falcon, showed increased mortality. The ongoing epidemic in black‐headed gulls, many of which breed inland, may increase the risk for poultry, especially in July–August, when first‐year birds disperse from the breeding colonies. HPAI A(H5N1) virus also continued to expand in the Americas, including in mammalian species, and is expected to reach the Antarctic in the near future. HPAI virus infections were detected in six mammal species, particularly in marine mammals and mustelids, for the first time, while the viruses currently circulating in Europe retain a preferential binding for avian‐like receptors. Since 13 March 2022 and as of 10 May 2023, two A(H5N1) clade 2.3.4.4b virus detections in humans were reported from China (1), and Chile (1), as well as three A(H9N2) and one A(H3N8) human infections in China. The risk of infection with currently circulating avian H5 influenza viruses of clade 2.3.4.4b in Europe remains low for the general population in the EU/EEA, and low to moderate for occupationally or otherwise exposed people. John Wiley and Sons Inc. 2023-06-07 /pmc/articles/PMC10245295/ /pubmed/37293570 http://dx.doi.org/10.2903/j.efsa.2023.8039 Text en © 2023 European Food Safety Authority, European Centre for Disease Prevention and Control, European Union Reference Laboratory for Avian Influenza. EFSA Journal published by Wiley‐VCH GmbH on behalf of European Food Safety Authority https://creativecommons.org/licenses/by-nd/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by-nd/4.0/ (https://creativecommons.org/licenses/by-nd/4.0/) License, which permits use and distribution in any medium, provided the original work is properly cited and no modifications or adaptations are made.
spellingShingle Scientific Report
Adlhoch, Cornelia
Fusaro, Alice
Gonzales, José L
Kuiken, Thijs
Mirinaviciute, Grazina
Niqueux, Éric
Stahl, Karl
Staubach, Christoph
Terregino, Calogero
Broglia, Alessandro
Kohnle, Lisa
Baldinelli, Francesca
Avian influenza overview March – April 2023
title Avian influenza overview March – April 2023
title_full Avian influenza overview March – April 2023
title_fullStr Avian influenza overview March – April 2023
title_full_unstemmed Avian influenza overview March – April 2023
title_short Avian influenza overview March – April 2023
title_sort avian influenza overview march – april 2023
topic Scientific Report
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10245295/
https://www.ncbi.nlm.nih.gov/pubmed/37293570
http://dx.doi.org/10.2903/j.efsa.2023.8039
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