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Abstract

In December 2025, highly pathogenic avian influenza (HPAI) H5N1 clade 2.3.4.4b genotype DI.2.1 virus was detected in a cat living on a dairy cattle farm. Milk and serum samples from the dairy cattle were tested for avian influenza virus. No viral RNA was detected; however, H5N1-specific antibodies were identified in serum samples from 34 (47.2%) of 72 lactating dairy cows and 24 (63.2%) of 38 youngstock. These demonstrate expansion of the mammalian host range of HPAI H5N1 in Europe.

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/content/10.2807/1560-7917.ES.2026.31.25.2600464
2026-06-25
2026-07-18
/content/10.2807/1560-7917.ES.2026.31.25.2600464
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Detection of antibodies against avian influenza in European dairy cattle, the Netherlands, January 2026
<p class="citation"> <span>Citation style for this article:</span> <span class="meta-value authors"> <a href="/search?value1=Monika+Z+Ballmann&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Ballmann Monika Z</a>, <a href="/search?value1=Luca+Bordes&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Bordes Luca</a>, <a href="/search?value1=Kim+M+Bouwman&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Bouwman Kim M</a>, <a href="/search?value1=Marc+Y+Engelsma&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Engelsma Marc Y</a>, <a href="/search?value1=Sandra+Venema-Kemper&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Venema-Kemper Sandra</a>, <a href="/search?value1=Sylvia+BE+Pritz-Verschuren&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Pritz-Verschuren Sylvia BE</a>, <a href="/search?value1=Rene+Heutink&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Heutink Rene</a>, <a href="/search?value1=Marit+Roose&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Roose Marit</a>, <a href="/search?value1=Marcel+AH+Spierenburg&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Spierenburg Marcel AH</a>, <a href="/search?value1=Arco+van+der+Spek&option1=author&noRedirect=true" class="nonDisambigAuthorLink">van der Spek Arco</a>, <a href="/search?value1=Hendrik+IJ+Roest&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Roest Hendrik IJ</a>, <a href="/search?value1=Evelien+A+Germeraad&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Germeraad Evelien A</a></span>. Detection of antibodies against avian influenza in European dairy cattle, the Netherlands, January 2026. <a href="/content/ecdc">Euro Surveill.</a> 2026;31(25):pii=2600464. <a href="https://doi.org/10.2807/1560-7917.ES.2026.31.25.2600464" title="doi link" target="_blank">https://doi.org/10.2807/1560-7917.ES.2026.31.25.2600464</a> <span class="ES_Article_citation"> <span class="generated">Received</span>: 28 May 2026;&nbsp;&nbsp; <span class="generated">Accepted</span>: 25 Jun 2026 </span> </p>
/content/10.2807/1560-7917.ES.2026.31.25.2600464
/content/10.2807/1560-7917.ES.2026.31.25.2600464
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