Differences in the long-term course of post-COVID-19 symptoms in adults and children across epidemic periods: A retrospective cohort study in Japan, 2020–2024

• Aya Sugiyama ,

  Roles Conceptualization, Data curation, Formal analysis, Funding acquisition, Investigation, Methodology, Project administration, Software, Visualization, Writing – original draft

  * E-mail: aya-sugiyama@hiroshima-u.ac.jp

  Affiliation Department of Epidemiology Disease Control and Prevention, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan

  https://orcid.org/0000-0002-8087-4319

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• Toshiro Takafuta,

  Roles Conceptualization, Project administration, Resources, Supervision, Writing – review & editing

  Affiliation Hiroshima City Funairi Citizens Hospital, Hiroshima, Japan

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• Kanon Abe,

  Roles Investigation, Methodology, Writing – review & editing

  Affiliation Department of Preventive Gerontology, Center for Gerontology and Social Science, National Center for Geriatrics and Gerontology, Aichi, Japan

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• Yayoi Yoshinaga,

  Roles Investigation, Writing – review & editing

  Affiliation Department of Epidemiology Disease Control and Prevention, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan

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• Ko Ko,

  Roles Methodology, Supervision, Writing – review & editing

  Affiliation Department of Epidemiology Disease Control and Prevention, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan

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• Tomoki Sato,

  Roles Methodology, Validation, Writing – review & editing, Conceptualization

  Affiliations Hiroshima City Funairi Citizens Hospital, Hiroshima, Japan, Department of Pediatrics, Hiroshima City Funairi Citizens Hospital, Hiroshima, Japan

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• Tomoyuki Akita,

  Roles Formal analysis, Methodology, Supervision, Writing – review & editing

  Affiliation Department of Epidemiology Disease Control and Prevention, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan

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• Masao Kuwabara,

  Roles Conceptualization, Supervision, Writing – review & editing

  Affiliation Hiroshima Prefecture Center for Disease Control and Prevention, Hiroshima, Japan

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• Shingo Fukuma,

  Roles Supervision, Writing – review & editing

  Affiliation Department of Epidemiology Disease Control and Prevention, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan

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• Junko Tanaka

  Roles Conceptualization, Funding acquisition, Investigation, Methodology, Project administration, Supervision, Writing – review & editing

  Affiliation Department of Epidemiology Disease Control and Prevention, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan

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