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Highly pathogenic avian influenza A(H5N1) virus infection in farmed minks, Spain, October 2022
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Montserrat Agüero1,*
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Isabella Monne2,*
, Azucena Sánchez1 , Bianca Zecchin 2
, Alice Fusaro2
, María José Ruano1 , Manuel del Valle Arrojo3 , Ricardo Fernández-Antonio4
, Antonio Manuel Souto5 , Pedro Tordable5 , Julio Cañás5 , Francesco Bonfante2 , Edoardo Giussani2 , Calogero Terregino2 , Jesús Javier Orejas6
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View Affiliations Hide AffiliationsAffiliations: 1 Laboratorio Central de Veterinaria (LCV), Ministry of Agriculture, Fisheries and Food, Algete, Madrid, Spain 2 Istituto Zooprofilattico Sperimentale delle Venezie (IZSVe), Legnaro, Italy 3 Counselling of Health, Xunta de Galicia, A Coruña, Spain 4 Galician Mink Breeders Association, Santiago de Compostela, A Coruña, Spain 5 Livestock Service, Counselling of Rural Affairs, Xunta de Galicia, A Coruña, Spain 6 Animal Health Service, Counselling of Rural Affairs, Xunta de Galicia, A Coruña, Spain* These authors contributed equally to this work and share first authorship.Correspondence:Isabella Monneimonne izsvenezie.it
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Citation style for this article: Agüero Montserrat, Monne Isabella, Sánchez Azucena, Zecchin Bianca, Fusaro Alice, Ruano María José, del Valle Arrojo Manuel, Fernández-Antonio Ricardo, Souto Antonio Manuel, Tordable Pedro, Cañás Julio, Bonfante Francesco, Giussani Edoardo, Terregino Calogero, Orejas Jesús Javier. Highly pathogenic avian influenza A(H5N1) virus infection in farmed minks, Spain, October 2022. Euro Surveill. 2023;28(3):pii=2300001. https://doi.org/10.2807/1560-7917.ES.2023.28.3.2300001 Received: 02 Jan 2023; Accepted: 18 Jan 2023
Abstract
In October 2022, an outbreak in Europe of highly pathogenic avian influenza (HPAI) A(H5N1) in intensively farmed minks occurred in northwest Spain. A single mink farm hosting more than 50,000 minks was involved. The identified viruses belong to clade 2.3.4.4b, which is responsible of the ongoing epizootic in Europe. An uncommon mutation (T271A) in the PB2 gene with potential public health implications was found. Our investigations indicate onward mink transmission of the virus may have occurred in the affected farm.

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