Abstract To investigate if the AY.4.2 sub-lineage of the SARS-CoV-2 Delta variant is associated with hospitalisation 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 healthcare datasets. Using stratified Cox regression, we estimated adjusted hazard ratios (aHR) of hospital admission (aHR=0.85, 95% CI 0.77-0.94), hospital admission or emergency care attendance (aHR=0.87, 95% CI 0.81-0.94) and COVID-19 mortality (aHR=0.85, 95% CI 0.71-1.03). The results indicate that the risks of hospitalisation and mortality is similar or lower for AY.4.2 compared to cases with other Delta sub-lineages.
【저자키워드】 COVID-19, SARS-CoV-2, Mortality, hospitalisation, AY.4.2, VUI-21OCT-01, 【초록키워드】 Delta, risk, delta variant, healthcare, Hospital admission, England, Care, mortality risk, COVID-19 mortality, retrospective cohort study, 95% CI, adjusted hazard ratio, COVID-19 case, datasets, Stratified Cox regression, performed, the SARS-CoV-2, 【제목키워드】 delta variant, mortality risk, COVID-19 case,