Research
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
BMJ 2022; 378 doi: https://doi.org/10.1136/bmj-2022-070695 (Published 02 August 2022) Cite this as: BMJ 2022;378:e070695Linked Editorial
Covid-19: is omicron less lethal than delta?
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