Interim vaccine effectiveness against influenza virus among outpatients, France, October 2025 to January 2026.

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Title: Interim vaccine effectiveness against influenza virus among outpatients, France, October 2025 to January 2026.
Authors: De Clercq A; Hospices Civils de Lyon (HCL), Centre National de Référence des virus des infections respiratoires, Institut des Agents Infectieux, Laboratoire de Virologie, Lyon, France.; Université Lille, UFR3S - ILIS, Faculté d'Ingénierie et Management de la Santé, Lille, France., Blanquart F; Center for Interdisciplinary Research in Biology (CIRB), Collège de France, CNRS, INSERM, PSL Research University, Paris, France., Vieillefond V; BIOGROUP Paris Ouest, Levallois Perret, France., Visseaux B; Département d'infectiologie, Laboratoire Cerba, Cerba Healthcare, Frépillon, France., Jacques A; Biogroup Lorraine, Grand Est, Metz, France., Haim-Boukobza S; Laboratoires Cerballiance, Cerba Healthcare, Issy-les-Moulineaux, France., Wehrle V; BioLBS, Lillebonne, France., Deleglise G; INOVIE GEN-BIO, Clermont-Ferrand, France., Duret T; INOVIE GEN-BIO, Clermont-Ferrand, France., Bernard-Stoecklin S; Santé Publique France - Direction des maladies infectieuses, Saint-Maurice, France., Perez-Bercoff D; National Reference Center for Respiratory Viruses, Molecular Mechanisms of Multiplication of Pneumovirus, Institut Pasteur, Université Paris Cité, Paris, France., Oblette A; Hospices Civils de Lyon (HCL), Centre National de Référence des virus des infections respiratoires, Institut des Agents Infectieux, Laboratoire de Virologie, Lyon, France.; Centre International de Recherche en Infectiologie (CIRI), Laboratoire VirPath, Inserm U1111, de Lyon, Université Claude Bernard Lyon 1, Lyon, France., Lina B; Hospices Civils de Lyon (HCL), Centre National de Référence des virus des infections respiratoires, Institut des Agents Infectieux, Laboratoire de Virologie, Lyon, France.; Centre International de Recherche en Infectiologie (CIRI), Laboratoire VirPath, Inserm U1111, de Lyon, Université Claude Bernard Lyon 1, Lyon, France., Rameix-Welti MA; National Reference Center for Respiratory Viruses, Molecular Mechanisms of Multiplication of Pneumovirus, Institut Pasteur, Université Paris Cité, Paris, France.; Molecular Mechanisms of Multiplication of Pneumovirus, Université Versailles St-Quentin en Yvelines, Paris-Saclay INSERM UMR 1173 (2I), Assistance Publique des Hôpitaux de Paris, Paris, France., Josset L; Hospices Civils de Lyon (HCL), Centre National de Référence des virus des infections respiratoires, Institut des Agents Infectieux, Laboratoire de Virologie, Lyon, France.; Centre International de Recherche en Infectiologie (CIRI), Laboratoire VirPath, Inserm U1111, de Lyon, Université Claude Bernard Lyon 1, Lyon, France., Enouf V; National Reference Center for Respiratory Viruses, Molecular Mechanisms of Multiplication of Pneumovirus, Institut Pasteur, Université Paris Cité, Paris, France., Bal A; Hospices Civils de Lyon (HCL), Centre National de Référence des virus des infections respiratoires, Institut des Agents Infectieux, Laboratoire de Virologie, Lyon, France.; Centre International de Recherche en Infectiologie (CIRI), Laboratoire VirPath, Inserm U1111, de Lyon, Université Claude Bernard Lyon 1, Lyon, France.
Corporate Authors: RELAB study group; The members of the RELAB study group are listed under Acknowledgements.
Source: Euro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin [Euro Surveill] 2026 Jan; Vol. 31 (2).
Publication Type: Journal Article
Journal Info: Publisher: European Centre for Disease Prevention and Control (ECDC) Country of Publication: Sweden NLM ID: 100887452 Publication Model: Print Cited Medium: Internet ISSN: 1560-7917 (Electronic) Linking ISSN: 1025496X NLM ISO Abbreviation: Euro Surveill Subsets: MEDLINE
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  Data: Interim vaccine effectiveness against influenza virus among outpatients, France, October 2025 to January 2026.
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  Data: <searchLink fieldCode="AU" term="%22De+Clercq+A%22">De Clercq A</searchLink>; Hospices Civils de Lyon (HCL), Centre National de Référence des virus des infections respiratoires, Institut des Agents Infectieux, Laboratoire de Virologie, Lyon, France.; Université Lille, UFR3S - ILIS, Faculté d'Ingénierie et Management de la Santé, Lille, France.<br /><searchLink fieldCode="AU" term="%22Blanquart+F%22">Blanquart F</searchLink>; Center for Interdisciplinary Research in Biology (CIRB), Collège de France, CNRS, INSERM, PSL Research University, Paris, France.<br /><searchLink fieldCode="AU" term="%22Vieillefond+V%22">Vieillefond V</searchLink>; BIOGROUP Paris Ouest, Levallois Perret, France.<br /><searchLink fieldCode="AU" term="%22Visseaux+B%22">Visseaux B</searchLink>; Département d'infectiologie, Laboratoire Cerba, Cerba Healthcare, Frépillon, France.<br /><searchLink fieldCode="AU" term="%22Jacques+A%22">Jacques A</searchLink>; Biogroup Lorraine, Grand Est, Metz, France.<br /><searchLink fieldCode="AU" term="%22Haim-Boukobza+S%22">Haim-Boukobza S</searchLink>; Laboratoires Cerballiance, Cerba Healthcare, Issy-les-Moulineaux, France.<br /><searchLink fieldCode="AU" term="%22Wehrle+V%22">Wehrle V</searchLink>; BioLBS, Lillebonne, France.<br /><searchLink fieldCode="AU" term="%22Deleglise+G%22">Deleglise G</searchLink>; INOVIE GEN-BIO, Clermont-Ferrand, France.<br /><searchLink fieldCode="AU" term="%22Duret+T%22">Duret T</searchLink>; INOVIE GEN-BIO, Clermont-Ferrand, France.<br /><searchLink fieldCode="AU" term="%22Bernard-Stoecklin+S%22">Bernard-Stoecklin S</searchLink>; Santé Publique France - Direction des maladies infectieuses, Saint-Maurice, France.<br /><searchLink fieldCode="AU" term="%22Perez-Bercoff+D%22">Perez-Bercoff D</searchLink>; National Reference Center for Respiratory Viruses, Molecular Mechanisms of Multiplication of Pneumovirus, Institut Pasteur, Université Paris Cité, Paris, France.<br /><searchLink fieldCode="AU" term="%22Oblette+A%22">Oblette A</searchLink>; Hospices Civils de Lyon (HCL), Centre National de Référence des virus des infections respiratoires, Institut des Agents Infectieux, Laboratoire de Virologie, Lyon, France.; Centre International de Recherche en Infectiologie (CIRI), Laboratoire VirPath, Inserm U1111, de Lyon, Université Claude Bernard Lyon 1, Lyon, France.<br /><searchLink fieldCode="AU" term="%22Lina+B%22">Lina B</searchLink>; Hospices Civils de Lyon (HCL), Centre National de Référence des virus des infections respiratoires, Institut des Agents Infectieux, Laboratoire de Virologie, Lyon, France.; Centre International de Recherche en Infectiologie (CIRI), Laboratoire VirPath, Inserm U1111, de Lyon, Université Claude Bernard Lyon 1, Lyon, France.<br /><searchLink fieldCode="AU" term="%22Rameix-Welti+MA%22">Rameix-Welti MA</searchLink>; National Reference Center for Respiratory Viruses, Molecular Mechanisms of Multiplication of Pneumovirus, Institut Pasteur, Université Paris Cité, Paris, France.; Molecular Mechanisms of Multiplication of Pneumovirus, Université Versailles St-Quentin en Yvelines, Paris-Saclay INSERM UMR 1173 (2I), Assistance Publique des Hôpitaux de Paris, Paris, France.<br /><searchLink fieldCode="AU" term="%22Josset+L%22">Josset L</searchLink>; Hospices Civils de Lyon (HCL), Centre National de Référence des virus des infections respiratoires, Institut des Agents Infectieux, Laboratoire de Virologie, Lyon, France.; Centre International de Recherche en Infectiologie (CIRI), Laboratoire VirPath, Inserm U1111, de Lyon, Université Claude Bernard Lyon 1, Lyon, France.<br /><searchLink fieldCode="AU" term="%22Enouf+V%22">Enouf V</searchLink>; National Reference Center for Respiratory Viruses, Molecular Mechanisms of Multiplication of Pneumovirus, Institut Pasteur, Université Paris Cité, Paris, France.<br /><searchLink fieldCode="AU" term="%22Bal+A%22">Bal A</searchLink>; Hospices Civils de Lyon (HCL), Centre National de Référence des virus des infections respiratoires, Institut des Agents Infectieux, Laboratoire de Virologie, Lyon, France.; Centre International de Recherche en Infectiologie (CIRI), Laboratoire VirPath, Inserm U1111, de Lyon, Université Claude Bernard Lyon 1, Lyon, France.
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  Data: <searchLink fieldCode="CA" term="%22RELAB+study+group%22">RELAB study group</searchLink>; The members of the RELAB study group are listed under Acknowledgements.
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  Data: <searchLink fieldCode="JN" term="%22100887452%22">Euro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin</searchLink> [Euro Surveill] 2026 Jan; Vol. 31 (2).
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  Data: <i>Publisher: </i><searchLink fieldCode="PB" term="%22European+Centre+for+Disease+Prevention+and+Control+%28ECDC%29%22">European Centre for Disease Prevention and Control (ECDC) </searchLink><i>Country of Publication: </i>Sweden <i>NLM ID: </i>100887452 <i>Publication Model: </i>Print <i>Cited Medium: </i>Internet <i>ISSN: </i>1560-7917 (Electronic) <i>Linking ISSN: </i><searchLink fieldCode="IS" term="%221025496X%22">1025496X </searchLink><i>NLM ISO Abbreviation: </i>Euro Surveill <i>Subsets: </i>MEDLINE
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