Temporal patterns of asymptomatic SARS-CoV-2 infection among pediatric population in Japan: A 3-year analysis.

Autor: Kozawa K; Department of Pediatrics, Fujita Health University School of Medicine, Toyoake, Aichi, Japan., Higashimoto Y; Department of Clinical Microbiology, Fujita Health University School of Medical Sciences, Toyoake, Aichi, Japan., Kawamura Y; Department of Pediatrics, Fujita Health University School of Medicine, Toyoake, Aichi, Japan., Miura H; Department of Pediatrics, Fujita Health University School of Medicine, Toyoake, Aichi, Japan., Hattori F; Department of Pediatrics, Toyokawa City Hospital, Toyokawa, Aichi, Japan., Mihara Y; Department of Pediatrics, Kariya Toyota General Hospital, Kariya, Aichi, Japan., Nakai H; Department of Pediatrics, Toyokawa City Hospital, Toyokawa, Aichi, Japan., Nishimura N; Department of Pediatrics, Konan Kosei Hospital, Konan, Aichi, Japan., Ozaki T; Department of Pediatrics, Konan Kosei Hospital, Konan, Aichi, Japan., Ihira M; Department of Clinical Science for Biological Monitoring, Fujita Health University School of Medical Sciences, Toyoake, Aichi, Japan., Yoshikawa T; Department of Pediatrics, Fujita Health University School of Medicine, Toyoake, Aichi, Japan.
Jazyk: angličtina
Zdroj: Journal of medical virology [J Med Virol] 2024 Aug; Vol. 96 (8), pp. e29847.
DOI: 10.1002/jmv.29847
Abstrakt: To elucidate the seroprevalence and rate of asymptomatic infection with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in Japanese children, serological analysis was performed using serum samples collected from March 2020 to February 2023. A total of 1493 serum samples were collected during the first study period (March 2020 to February 2021). None of the serum samples was positive for SARS-CoV-2 antibody. In the second period (March 2021 to February 2022), seven of the 1055 patients (0.7%) experienced SARS-CoV-2 infection. The third period (March 2022 to February 2023) was divided into three terms: from March to June 30, 2022; from July to October 2022; and from November 2022 to February 2023. The seroprevalence gradually increased throughout this period, with rates of 6.0%, 18.6%, and 30.4% in the three terms, respectively. Pediatric cases of asymptomatic SARS-CoV-2 infection occurred after the surge of Omicron variants. Since none of the SARS-CoV-2 antibody-positive patients had a previous history of coronavirus disease 2019, the seroprevalence rate in this study may represent the rate of asymptomatic infection.
(© 2024 Wiley Periodicals LLC.)
Databáze: MEDLINE
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