Pathogenicity of sublineage BA.5, omicron variant strain comparison with other variant strains of SARS-Cov-2 and seasonal influenza in Japan: Updated until December 2022.
DOI:
https://doi.org/10.51094/jxiv.59キーワード:
excess mortality、 COVID-19、 all cause death、 stochastic frontier estimation、 NIID model、 Tokyo、 Japan抄録
Background: Sublineage BA.5 of omicron variant strain recorded the highest peak of morbidity and mortality confirmed with test per day in August for the former and September for the latter, 2022.
Object: We sought to quantify excess mortality using the National Institute of Infectious Diseases (NIID) model for all cause of death to evaluate pathogenicity of sublineage BA.5 of omicron variant strain.
Method: We applied the NIID model to deaths of all causes from 1987 up through the December, 2022 for the whole of Japan and up through October, 2022 for Tokyo.
Results: Results in Japan show that 18845, 14133, 8300, 6702 and 18426 excess mortality was observed in August to December 2022,which means 16.8, 13.0,7.0 and 13.7 % of the baseline and approximately 70% of total excess mortality during the COVID-19 pandemic. Even in Tokyo, it was 3742 and 36% of total of excess mortality in this pandemic, between August and October, 2022.
Discussion and Conclusion: Results may indicate that its pathogenicity was much stronger than other variant strain and seasonal influenza.
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No author has any conflict of interest, financial or otherwise, to declare in relation to this study.ダウンロード *前日までの集計結果を表示します
引用文献
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投稿日時: 2022-04-27 04:32:31 UTC
公開日時: 2022-05-02 09:17:47 UTC — 2023-03-15 00:59:05 UTCに更新
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The study period has been extended.ライセンス
Copyright（c）2022
Kurita, Junko
Tamie Sugawara
Yasushi Ohkusa
この作品は、Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Licenseの下でライセンスされています。
