Estimating SARS-CoV-2 infections and associated changes in COVID-19 severity and fatality.
Influenza and other respiratory viruses（2023）
摘要
Since 2021, changes in the dominant SARS-CoV-2 variant, vaccination rollout, and the shift of infection to younger ages have reduced SARS-CoV-2 infection ascertainment. The same factors, combined with the improvement of patient management and care, contributed to a massive reduction in the severity and fatality of COVID-19.
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关键词
IFR, IHR, infection ascertainment ratio, infection fatality ratio, infection hospitalization ratio, SARS-CoV-2
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