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Emergence of Highly Pathogenic Avian Influenza A Virus (H5N1) of Clade 2.3.4.4b in Egypt, 2021-2022
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- Mosaad, Zienab (author)
- Agr Res Ctr ARC, Anim Hlth Res Inst, Reference Lab Vet Qual Control Poultry Prod, Giza 12618, Egypt.
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- Elhusseiny, Mohamed H. (author)
- Agr Res Ctr ARC, Anim Hlth Res Inst, Reference Lab Vet Qual Control Poultry Prod, Giza 12618, Egypt.
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- Zanaty, Ali (author)
- Agr Res Ctr ARC, Anim Hlth Res Inst, Reference Lab Vet Qual Control Poultry Prod, Giza 12618, Egypt.
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- Agr Res Ctr ARC, Anim Hlth Res Inst, Reference Lab Vet Qual Control Poultry Prod, Giza 12618, Egypt Agr Res Ctr ARC, Anim Hlth Res Inst, Mansour Branch, Dakahlia 35511, Egypt. (creator_code:org_t)
- 2023-01-05
- 2023
- English.
- In: Pathogens. - : MDPI. - 2076-0817. ; 12:1
- Journal article (peer-reviewed)
Abstract
Subject headings
Close
- Wild migratory birds have the capability to spread avian influenza virus (AIV) over long distances as well as transmit the virus to domestic birds. In this study, swab and tissue samples were obtained from 190 migratory birds during close surveillance in Egypt in response to the recent outbreaks of the highly pathogenic avian influenza (HPAI) H5N1 virus. The collected samples were tested for a variety of AIV subtypes (H5N1, H9N2, H5N8, and H6N2) as well as other pathogens such as NDV, IBV, ILT, IBDV, and WNV. Among all of the tested samples, the HPAI H5N1 virus was found in six samples; the other samples were found to be negative for all of the tested pathogens. The Egyptian HPAI H5N1 strains shared genetic traits with the HPAI H5N1 strains that are currently being reported in Europe, North America, Asia, and Africa in 2021-2022. Whole genome sequencing revealed markers associated with mammalian adaption and virulence traits among different gene segments, similar to those found in HPAI H5N1 strains detected in Europe and Africa. The detection of the HPAI H5N1 strain of clade 2.3.4.4b in wild birds in Egypt underlines the risk of the introduction of this strain into the local poultry population. Hence, there is reason to be vigilant and continue epidemiological and molecular monitoring of the AIV in close proximity to the domestic-wild bird interface.
Subject headings
- NATURVETENSKAP -- Biologi -- Mikrobiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Microbiology (hsv//eng)
Keyword
- avian influenza
- HPAI
- wild migratory birds
- clade 2
- 3
- 4
- 4b
- Egypt
Publication and Content Type
- ref (subject category)
- art (subject category)
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