Abstract
To investigate if the AY.4.2 sublineage of the SARS-CoV-2 delta variant is associated with hospitalization and mortality risks that differ from non-AY.4.2 delta risks, we performed a retrospective cohort study of sequencing-confirmed COVID-19 cases in England based on linkage of routine health care datasets. Using stratified Cox regression, we estimated adjusted hazard ratios (aHR) of hospital admission (aHR = 0.85; 95% confidence interval [CI],. 77-.94), hospital admission or emergency care attendance (aHR = 0.87; 95% CI,. 81-.94), and COVID-19 mortality (aHR = 0.85; 95% CI,. 71-1.03). The results indicate that the risks of hospitalization and mortality are similar or lower for AY.4.2 compared to cases with other delta sublineages.
Original language | English |
---|---|
Pages (from-to) | 808-811 |
Number of pages | 4 |
Journal | Journal of Infectious Diseases |
Volume | 226 |
Issue number | 5 |
DOIs | |
Publication status | Published - 1 Sept 2022 |
Bibliographical note
Funding Information:This work was supported by the United Kingdom Research and Innovation Medical Research Council (UKRI MRC) (unit programme numbers MC_UU_00002/11 to D. D. A. and A. M. P., and MC_UU_00002/10 to S. R. S.); UKRI MRC/ Department of Health and Social Care National Institute for Health Research (NIHR) COVID-19 Rapid Response Call (grant number MC_PC_19074 to T. N., A. C., D. D. A., and A. M. P.); NIHR Health Protection Unit in Behavioural Science and Evaluation (to D. D. A.); and NIHR Cambridge Biomedical Research Centre (grant number BRC-1215-20014).
Funding Information:
Potential conflicts of interest. G. D. declares that his employer, UK Health Security Agency, previously known as Public Health England, received funding from GlaxoSmithKline for a research project related to influenza antiviral treatment. This preceded and had no relation to COVID-19, and G. D. had no role in and received no funding from the project. All other authors report no potential conflicts. All authors have submitted the ICMJE Form for Disclosure of Potential Conflicts of Interest. Conflicts that the editors consider relevant to the content of the manuscript have been disclosed.
Publisher Copyright:
© 2022 The Author(s). Published by Oxford University Press for the Infectious Diseases Society of America.
Keywords
- AY.4.2
- COVID-19
- SARS-CoV-2
- VUI-21OCT-01
- hospitalization
- mortality