Risk of covid-19 related deaths for SARS-CoV-2 omicron (B.1.1.529) compared with delta (B.1.617.2): retrospective cohort study.

Isobel L Ward,Charlotte Bermingham,Daniel Ayoubkhani,Owen J Gethings,Koen B Pouwels,Thomas Yates,Kamlesh Khunti,Julia Hippisley-Cox,Amitava Banerjee,Ann Sarah Walker,Vahé Nafilyan

BMJ (Clinical research ed.)（2022）

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摘要

The results support earlier studies showing a reduction in severity of infection with omicron BA.1 compared with delta in terms of hospital admission. This study extends the research to also show a reduction in the risk of covid-19 death for the omicron variant compared with the delta variant.

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关键词

cohort study,deaths,retrospective cohort study,risk,sars-cov

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