The background occurrence of selected clinical conditions prior to the start of an extensive national vaccination program in Japan

• Tomotaka Sobue,

  Roles Conceptualization, Methodology, Writing – review & editing

  Affiliation Division of Environmental Medicine and Population Science, Graduate School of Medicine, Osaka University, Osaka, Japan

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• Haruhisa Fukuda,

  Roles Conceptualization, Methodology, Writing – review & editing

  Affiliation Department of Health Care Administration and Management, Kyushu University, Fukuoka, Japan

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• Tetsuya Matsumoto,

  Roles Conceptualization, Methodology, Writing – review & editing

  Affiliation Department of Infectious Diseases, International University of Health and Welfare, Narita, Japan

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• Bennett Lee,

  Roles Conceptualization, Data curation, Methodology, Writing – review & editing

  Affiliation Vaccine Medical Affairs, Pfizer Japan Inc., Tokyo, Japan

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• Shuhei Ito ,

  Roles Conceptualization, Data curation, Methodology, Project administration, Supervision, Writing – review & editing

  * E-mail: Shuhei.Ito@pfizer.com

  Affiliation Vaccine Medical Affairs, Pfizer Japan Inc., Tokyo, Japan

  https://orcid.org/0000-0003-0289-7766

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• Satoshi Iwata

  Roles Conceptualization, Methodology, Writing – review & editing

  Affiliations Department of Infectious Diseases, National Cancer Center Hospital, Tokyo, Japan, Department of Infectious Diseases, Keio University School of Medicine, Tokyo, Japan

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