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Avian influenza overview September – December 2022.

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Title: Avian influenza overview September – December 2022.
Authors: Adlhoch, Cornelia (AUTHOR), Fusaro, Alice (AUTHOR), Gonzales, José L (AUTHOR), Kuiken, Thijs (AUTHOR), Marangon, Stefano (AUTHOR), Niqueux, Éric (AUTHOR), Staubach, Christoph (AUTHOR), Terregino, Calogero (AUTHOR), Aznar, Inma (AUTHOR), Guajardo, Irene Muñoz (AUTHOR), Baldinelli, Francesca (AUTHOR)
Source: EFSA Journal. Jan2023, Vol. 21 Issue 1, p1-63. 63p.
Subject Terms: *Avian influenza, Poultry farms, Genetic markers, Numbers of species, Poultry, H5N1 Influenza
Abstract: Between October 2021 and September 2022 Europe has suffered the most devastating highly pathogenic avian influenza (HPAI) epidemic with a total of 2,520 outbreaks in poultry, 227 outbreaks in captive birds, and 3,867 HPAI virus detections in wild birds. The unprecedent geographical extent (37 European countries affected) resulted in 50 million birds culled in affected establishments. In the current reporting period, between 10 September and 2 December 2022, 1,163 HPAI virus detections were reported in 27 European countries in poultry (398), captive (151) and wild birds (613). A decrease in HPAI virus detections in colony‐breeding seabirds species and an increase in the number of detections in waterfowl has been observed. The continuous circulation of the virus in the wild reservoir has led to the frequent introduction of the virus into poultry populations. It is suspected that waterfowl might be more involved than seabirds in the incursion of HPAI virus into poultry establishments. In the coming months, the increasing infection pressure on poultry establishments might increase the risk of incursions in poultry, with potential further spread, primarily in areas with high poultry densities. The viruses detected since September 2022 (clade 2.3.4.4b) belong to eleven genotypes, three of which have circulated in Europe during the summer months, while eight represent new genotypes. HPAI viruses were also detected in wild and farmed mammal species in Europe and North America, showing genetic markers of adaptation to replication in mammals. Since the last report, two A(H5N1) detections in humans in Spain, one A(H5N1), one A(H5N6) and one A(H9N2) human infection in China as well as one A(H5) infection without NA‐type result in Vietnam were reported, respectively. The risk of infection is assessed as low for the general population in the EU/EEA, and low to medium for occupationally exposed people. [ABSTRACT FROM AUTHOR]
Copyright of EFSA Journal is the property of European Food Safety Authority and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Avian influenza overview September – December 2022.
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  Data: <searchLink fieldCode="AR" term="%22Adlhoch%2C+Cornelia%22">Adlhoch, Cornelia</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Fusaro%2C+Alice%22">Fusaro, Alice</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Gonzales%2C+José+L%22">Gonzales, José L</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Kuiken%2C+Thijs%22">Kuiken, Thijs</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Marangon%2C+Stefano%22">Marangon, Stefano</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Niqueux%2C+Éric%22">Niqueux, Éric</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Staubach%2C+Christoph%22">Staubach, Christoph</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Terregino%2C+Calogero%22">Terregino, Calogero</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Aznar%2C+Inma%22">Aznar, Inma</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Guajardo%2C+Irene+Muñoz%22">Guajardo, Irene Muñoz</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Baldinelli%2C+Francesca%22">Baldinelli, Francesca</searchLink> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22EFSA+Journal%22">EFSA Journal</searchLink>. Jan2023, Vol. 21 Issue 1, p1-63. 63p.
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  Data: *<searchLink fieldCode="DE" term="%22Avian+influenza%22">Avian influenza</searchLink><br /><searchLink fieldCode="DE" term="%22Poultry+farms%22">Poultry farms</searchLink><br /><searchLink fieldCode="DE" term="%22Genetic+markers%22">Genetic markers</searchLink><br /><searchLink fieldCode="DE" term="%22Numbers+of+species%22">Numbers of species</searchLink><br /><searchLink fieldCode="DE" term="%22Poultry%22">Poultry</searchLink><br /><searchLink fieldCode="DE" term="%22H5N1+Influenza%22">H5N1 Influenza</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Between October 2021 and September 2022 Europe has suffered the most devastating highly pathogenic avian influenza (HPAI) epidemic with a total of 2,520 outbreaks in poultry, 227 outbreaks in captive birds, and 3,867 HPAI virus detections in wild birds. The unprecedent geographical extent (37 European countries affected) resulted in 50 million birds culled in affected establishments. In the current reporting period, between 10 September and 2 December 2022, 1,163 HPAI virus detections were reported in 27 European countries in poultry (398), captive (151) and wild birds (613). A decrease in HPAI virus detections in colony‐breeding seabirds species and an increase in the number of detections in waterfowl has been observed. The continuous circulation of the virus in the wild reservoir has led to the frequent introduction of the virus into poultry populations. It is suspected that waterfowl might be more involved than seabirds in the incursion of HPAI virus into poultry establishments. In the coming months, the increasing infection pressure on poultry establishments might increase the risk of incursions in poultry, with potential further spread, primarily in areas with high poultry densities. The viruses detected since September 2022 (clade 2.3.4.4b) belong to eleven genotypes, three of which have circulated in Europe during the summer months, while eight represent new genotypes. HPAI viruses were also detected in wild and farmed mammal species in Europe and North America, showing genetic markers of adaptation to replication in mammals. Since the last report, two A(H5N1) detections in humans in Spain, one A(H5N1), one A(H5N6) and one A(H9N2) human infection in China as well as one A(H5) infection without NA‐type result in Vietnam were reported, respectively. The risk of infection is assessed as low for the general population in the EU/EEA, and low to medium for occupationally exposed people. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of EFSA Journal is the property of European Food Safety Authority and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.2903/j.efsa.2023.7786
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        Text: English
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      – SubjectFull: Avian influenza
        Type: general
      – SubjectFull: Poultry farms
        Type: general
      – SubjectFull: Genetic markers
        Type: general
      – SubjectFull: Numbers of species
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      – SubjectFull: Poultry
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      – SubjectFull: H5N1 Influenza
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      – TitleFull: Avian influenza overview September – December 2022.
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              Text: Jan2023
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