Temporal changes in spike IgG levels after two doses of BNT162b2 vaccine in Japanese healthcare workers: Do spike IgG levels at 3 months predict levels 6 or 8 months after vaccination?

• Masaaki Takeuchi ,

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

  * E-mail: takeuchi@med.uoeh-u.ac.jp

  Affiliation Department of Laboratory and Transfusion Medicine, Hospital of University of Occupational and Environmental Health, School of Medicine, Kitakyushu, Japan

  https://orcid.org/0000-0001-7606-1537

  ⨯
• Akina Esaki,

  Roles Data curation, Methodology, Writing – review & editing

  Affiliation Department of Laboratory and Transfusion Medicine, Hospital of University of Occupational and Environmental Health, School of Medicine, Kitakyushu, Japan

  ⨯
• Yukie Higa,

  Roles Data curation, Methodology, Writing – review & editing

  Affiliation Department of Laboratory and Transfusion Medicine, Hospital of University of Occupational and Environmental Health, School of Medicine, Kitakyushu, Japan

  ⨯
• Akemi Nakazono

  Roles Methodology, Writing – review & editing

  Affiliation Department of Laboratory and Transfusion Medicine, Hospital of University of Occupational and Environmental Health, School of Medicine, Kitakyushu, Japan

  ⨯