| アイテムタイプ |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2026-04-07 |
| タイトル |
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タイトル |
Incidence of COVID-19-Associated Hospitalization by Vaccination Status in Children and Adolescents During Omicron-Dominant Period in Japan: The VENUS Study |
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言語 |
en |
| 言語 |
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言語 |
eng |
| キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題URI |
COVID-19 |
| キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題URI |
SARS-CoV-2 |
| キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題URI |
vaccination |
| キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題URI |
children |
| キーワード |
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言語 |
en |
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主題Scheme |
UDC |
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主題URI |
adolescents |
| キーワード |
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|
言語 |
en |
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主題Scheme |
UDC |
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主題URI |
hospitalization |
| キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題URI |
Omicron |
| キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題URI |
Japan |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
| 著者 |
Maeda, Haruka
Toizumi, Michiko
Igarashi, Ataru
Maeda, Megumi
Oda, Futoshi
Fukuda, Haruhisa
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| 抄録 |
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内容記述タイプ |
Abstract |
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内容記述 |
Background/Objectives: Evidence regarding the impact of COVID-19 vaccination on children and adolescents remains limited, particularly in Japan. Thus, this study aimed to estimate incidence rates of COVID-19-associated hospitalization by vaccination status and evaluate the association between COVID-19 vaccination and COVID-19-associated hospitalization among individuals aged 6 months to <18 years in Japan. Methods: We conducted a retrospective, population-based cohort study using linked health insurance claims data and municipal COVID-19 vaccination registry records from nine Japanese municipalities between 1 January 2022, and 31 March 2023, when the Omicron variant was dominant nationwide. Incidence rates of COVID-19-associated hospitalization were estimated among unvaccinated individuals and those who had received one dose (partially vaccinated) or at least two doses of an ancestral monovalent COVID-19 vaccine (fully vaccinated). Incidence rate ratios (IRRs) were calculated, adjusting for age group, sex, presence of underlying medical conditions, municipality, and calendar month. Results: Among 163,305 individuals, 93 COVID-19-associated hospitalizations were identified. Crude incidence rates were 4.5 (95% confidence interval [CI]: 3.6–5.6), 3.2 (95% CI: 0.1–18.0), and 2.3 (95% CI: 1.1–4.2) per 100,000 person-months in unvaccinated, partially, and fully vaccinated groups, respectively. The adjusted IRR for the fully vaccinated group was 0.429 (95% CI: 0.198–0.930). Among hospitalized patients, 30.1% had underlying medical conditions, and only 4.3% required oxygen administration during hospitalization. Conclusions: Receiving at least two doses of COVID-19 vaccine was associated with a lower incidence rate of COVID-19-associated hospitalization among children and adolescents during the Omicron-dominant period in Japan. Expanding vaccine uptake among eligible pediatric populations may help reduce the burden of severe disease. |
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言語 |
en |
| 書誌情報 |
en : Children
巻 13,
号 2,
p. art. no. 183,
発行日 2026-01-28
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| 出版者 |
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出版者 |
MDPI |
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言語 |
en |
| ISSN |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
2227-9067 |
| DOI |
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関連タイプ |
isIdenticalTo |
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識別子タイプ |
DOI |
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関連識別子 |
https://doi.org/10.3390/children13020183 |
| 権利 |
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権利情報 |
© 2026 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license. |
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言語 |
en |
| 著者版フラグ |
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出版タイプ |
VoR |
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出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| 引用 |
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内容記述タイプ |
Other |
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内容記述 |
Children, 13(2), art. no. 183; 2026 |
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言語 |
en |
C13_183.pdf (735 KB)
