One report [1] (of many now) about Omicron being less severe than Delta: "Overall, we find evidence of a reduction in the risk of hospitalisation for Omicron r

One report [1] (of many now) about Omicron being less severe than Delta: "Overall, we find evidence of a reduction in the risk of hospitalisation for Omicron relative to Delta infections, averaging over all casesin the study period. The extent of reduction is sensitive to the inclusion criteria used for cases and hospitalisation, being in the range 20-25% when using any attendance at hospital as the endpoint, and 40-45% when using hospitalisation lasting 1 day or longer or hospitalisations with the ECDS discharge field recorded as “admitted” as the endpoint (Table 1)" [1] https://www.imperial.ac.uk/media/imperial-college/medicine/mrc-gida/2021-12-22-COVID19-Report-50.pdf https://www.imperial.ac.uk/media/imperial-college/medicine/m...