Anti-spike protein to determine SARS-CoV-2 antibody levels: Is there a specific threshold conferring protection in immunocompromised patients?

• Philippe Halfon,

  Roles Conceptualization, Investigation, Methodology, Supervision, Writing – original draft

  Affiliations Laboratoire Alphabio–Biogroup, Marseille, France, Department of Infectious Diseases and Internal Medicine, Hôpital Européen, Marseille, France

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• Sylvie Jordana,

  Roles Investigation, Writing – review & editing

  Affiliation Laboratoire Alphabio–Biogroup, Marseille, France

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• Stéphane Blachier,

  Roles Investigation, Writing – review & editing

  Affiliation Laboratoires Oriade Noviale–Biogroup, Grenoble, France

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• Philippe Cartlamy,

  Roles Conceptualization, Investigation, Writing – review & editing

  Affiliation Laboratoires Oriade Noviale–Biogroup, Grenoble, France

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• Laurent Kbaier,

  Roles Investigation, Writing – review & editing

  Affiliation Laboratoire Bioestérel–Biogroup, Mouans-Sartoux, France

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• Christina K. Psomas,

  Roles Investigation, Writing – review & editing

  Affiliation Department of Infectious Diseases and Internal Medicine, Hôpital Européen, Marseille, France

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• Patrick Philibert,

  Roles Investigation, Writing – review & editing

  Affiliation Department of Infectious Diseases and Internal Medicine, Hôpital Européen, Marseille, France

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• Gilles Antoniotti,

  Roles Conceptualization, Writing – review & editing

  Affiliation Nosoconseil, Aix les Bains, France

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• Julie Allemand-Sourrieu,

  Roles Investigation, Writing – review & editing

  Affiliation Department of Infectious Diseases and Internal Medicine, Hôpital Européen, Marseille, France

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• Stanislas Rebaudet,

  Roles Investigation, Writing – review & editing

  Affiliation Department of Infectious Diseases and Internal Medicine, Hôpital Européen, Marseille, France

  https://orcid.org/0000-0001-5099-1947

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• Guilhem Cavaille,

  Roles Investigation, Writing – review & editing

  Affiliation Department of Infectious Diseases and Internal Medicine, Hôpital Européen, Marseille, France

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• Chloé Stavris,

  Roles Investigation, Writing – review & editing

  Affiliation Department of Infectious Diseases and Internal Medicine, Hôpital Européen, Marseille, France

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• Frédérique Retornaz,

  Roles Investigation, Writing – review & editing

  Affiliation Department of Infectious Diseases and Internal Medicine, Hôpital Européen, Marseille, France

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• Laurent Chiche,

  Roles Investigation, Writing – review & editing

  Affiliation Department of Infectious Diseases and Internal Medicine, Hôpital Européen, Marseille, France

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• Guillaume Penaranda

  Roles Data curation, Formal analysis, Methodology, Writing – original draft

  * E-mail: guillaume.penaranda@biogroup.fr

  Affiliation Laboratoire Alphabio–Biogroup, Marseille, France

  https://orcid.org/0000-0002-7461-4254

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