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.

ABSTRACT:

Objective

To assess the risk of covid-19 death after infection with omicron BA.1 compared with delta (B.1.617.2).

Design

Retrospective cohort study.

Setting

England, United Kingdom, from 1 December 2021 to 30 December 2021.

Participants

1 035 149 people aged 18-100 years who tested positive for SARS-CoV-2 under the national surveillance programme and had an infection identified as omicron BA.1 or delta compatible.

Main outcome measures

The main outcome measure was covid-19 death as identified from death certification records. The exposure of interest was the SARS-CoV-2 variant identified from NHS Test and Trace PCR positive tests taken in the community (pillar 2) and analysed by Lighthouse laboratories. Cause specific Cox proportional hazard regression m

SUBMITTER: Ward IL 

PROVIDER: S-EPMC9344192 | biostudies-literature | 2022 Aug

REPOSITORIES: biostudies-literature