Clinical characteristics, treatments and outcomes of hospitalised COVID-19 patients across pandemic waves at a tertiary acute care hospital in Narita, Japan: a single-centre retrospective observational study
This study suggests that patient characteristics, vaccination coverage, standard of treatment and severity of illness changed across waves during the COVID-19 pandemic. Intensive care delivery in non-ICU wards was unavoidable due to limited ICU capacity, which may be a key consideration when preparing for future pandemics.
Authors
- Yasushi Noguchi (ORCID: https://orcid.org/0000-0001-8349-5851)
- Koki Kikuchi
- Rika Kurata (ORCID: https://orcid.org/0000-0002-9047-2452)
- Haruki Mito (ORCID: https://orcid.org/0000-0002-8477-1245)
- Shintaro Obata (ORCID: https://orcid.org/0000-0002-3957-8323)
- Yudai Yano
- Reiko Oku
- Takashi Kurita (ORCID: https://orcid.org/0000-0002-2983-0732)
- Motoki Fujii (ORCID: https://orcid.org/0000-0003-4032-3894)
- Ryota Hase (ORCID: https://orcid.org/0000-0002-3135-1757)
- Yu Niiyama
- Emiri Muranaka (ORCID: https://orcid.org/0000-0002-0060-8185)
- Hiroki Sasazawa
- Keiko Ishida (ORCID: https://orcid.org/0000-0003-0894-296X)
- Naoya Matsuda (ORCID: https://orcid.org/0000-0002-3665-9128)
- Yoshihisa Tateishi
- Yoshifumi Kubota
- Kazuya Nakanishi
- Hideki Ueda
- Satoshi Toishi
Institutions
- Fujita Health University (JP)
- National Institute of Infectious Diseases (JP)
- Ome Municipal General Hospital (JP)
- Chiba Kaihin Municipal Hospital (JP)
- Japanese Red Cross Kumamoto Hospital (JP)
- Kameda Medical Center (JP)
- Matsuyama Red Cross Hospital (JP)
- Nagasaki Medical Center (JP)
- Teine Keijinkai Hospital (JP)
- Japanese Red Cross Narita Hospital (JP)
- Nigerian University Games Association (NG)
- Tokushima Hospital (JP)
- Komatsu (Japan) (JP)
Publication Details
- Journal
- BMJ Open
- Published
- 2026-01-01
- DOI
- https://doi.org/10.1136/bmjopen-2025-109380
- Primary Topic
- COVID-19 epidemiological studies
- Type
- article
- Field-Weighted Citation Impact
- 0.00