O group is a protective factor for COVID19 in Basque population

• Maider Muñoz-Culla,

  Roles Data curation, Writing – review & editing

  Affiliation Biodonostia Health Research Institute, Group of Multiple Sclerosis, San Sebastián, Spain

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• Andres Roncancio-Clavijo,

  Roles Conceptualization, Writing – review & editing

  Affiliation Immunology Department, Donostia University Hospital, Osakidetza Basque Health Service, San Sebastián, Spain

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• Bruno Martínez,

  Roles Data curation

  Affiliation UGC Laboratories Gipuzkoa, Osakidetza Basque Health Service, San Sebastián, Spain

  https://orcid.org/0000-0001-6779-9089

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• Miriam Gorostidi-Aicua,

  Roles Formal analysis

  Affiliation Biodonostia Health Research Institute, Group of Multiple Sclerosis, San Sebastián, Spain

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• Luis Piñeiro,

  Roles Investigation, Writing – review & editing

  Affiliation Microbiology Department, Donostia University Hospital, Osakidetza Basque Health Service, San Sebastián, Spain

  https://orcid.org/0000-0003-4196-5557

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• Arkaitz Azkune,

  Roles Data curation, Investigation

  Affiliation Infectious Disease Department, Donostia University Hospital, Osakidetza Basque Health Service, San Sebastián, Spain

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• Ainhoa Alberro,

  Roles Formal analysis, Investigation, Writing – original draft

  Affiliation Biodonostia Health Research Institute, Group of Multiple Sclerosis, San Sebastián, Spain

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• Jorge Monge-Ruiz,

  Roles Data curation

  Affiliation Basque Center for Blood Transfusion and Human Tissues, Osakidetza Basque Health Service, Galdakao, Spain

  https://orcid.org/0000-0002-7807-2595

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• Tamara Castillo-Trivino,

  Roles Investigation, Resources, Writing – review & editing

  Affiliations Biodonostia Health Research Institute, Group of Multiple Sclerosis, San Sebastián, Spain, Immunology Department, Donostia University Hospital, Osakidetza Basque Health Service, San Sebastián, Spain, UGC Laboratories Gipuzkoa, Osakidetza Basque Health Service, San Sebastián, Spain, Microbiology Department, Donostia University Hospital, Osakidetza Basque Health Service, San Sebastián, Spain, Infectious Disease Department, Donostia University Hospital, Osakidetza Basque Health Service, San Sebastián, Spain, Basque Center for Blood Transfusion and Human Tissues, Osakidetza Basque Health Service, Galdakao, Spain, Neurology Department, Donostia University Hospital, Osakidetza Basque Health Service, San Sebastián, Spain

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• Alvaro Prada,

  Roles Resources, Supervision

  Affiliation Immunology Department, Donostia University Hospital, Osakidetza Basque Health Service, San Sebastián, Spain

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• David Otaegui

  Roles Conceptualization, Formal analysis, Investigation, Resources, Writing – original draft, Writing – review & editing

  * E-mail: david.otaegui@biodonostia.org

  Affiliation Biodonostia Health Research Institute, Group of Multiple Sclerosis, San Sebastián, Spain

  https://orcid.org/0000-0002-6625-5976

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