Comparative analysis of the risks of hospitalisation and death associated with SARS-CoV-2 omicron (B. 1.1. 529) and delta (B. 1.617. 2) variants in England: a cohort …

T Nyberg, NM Ferguson, SG Nash, HH Webster… - The lancet, 2022 - thelancet.com
Background The omicron variant (B. 1.1. 529) of SARS-CoV-2 has demonstrated partial
vaccine escape and high transmissibility, with early studies indicating lower severity of …

Household transmission of SARS-CoV-2 Omicron variant of concern subvariants BA. 1 and BA. 2 in Denmark

FP Lyngse, CT Kirkeby, M Denwood… - Nature …, 2022 - nature.com
Abstract SARS coronavirus 2 (SARS-CoV-2) continues to evolve and new variants emerge.
Using nationwide Danish data, we estimate the transmission dynamics of SARS-CoV-2 …

Clinical severity of COVID-19 in patients admitted to hospital during the omicron wave in South Africa: a retrospective observational study

W Jassat, SSA Karim, C Mudara, R Welch… - The Lancet Global …, 2022 - thelancet.com
Background Up to the end of January, 2022, South Africa has had four recognisable COVID-
19 pandemic waves, each predominantly dominated by one variant of concern: the ancestral …

SARS-CoV-2 vaccination and myocarditis in a Nordic cohort study of 23 million residents

Ø Karlstad, P Hovi, A Husby, T Härkänen… - JAMA …, 2022 - jamanetwork.com
Importance Reports of myocarditis after SARS-CoV-2 messenger RNA (mRNA) vaccination
have emerged. Objective To evaluate the risks of myocarditis and pericarditis following …

Transmission of SARS-CoV-2 Omicron VOC subvariants BA. 1 and BA. 2: evidence from Danish households

FP Lyngse, CT Kirkeby, M Denwood, LE Christiansen… - MedRxiv, 2022 - medrxiv.org
1 Abstract The Omicron SARS-CoV-2 variant of concern (VOC lineage B. 1.1. 529), which
became dominant in many countries during early 2022, includes several subvariants with …

Evolutionary implications of SARS-CoV-2 vaccination for the future design of vaccination strategies

IM Rouzine, G Rozhnova - Communications medicine, 2023 - nature.com
Once the first SARS-CoV-2 vaccine became available, mass vaccination was the main pillar
of the public health response to the COVID-19 pandemic. It was very effective in reducing …

[HTML][HTML] Molecular epidemiology of the SARS-CoV-2 variant Omicron BA. 2 sub-lineage in Denmark, 29 November 2021 to 2 January 2022

J Fonager, M Bennedbæk, P Bager… - …, 2022 - eurosurveillance.org
Following emergence of the SARS-CoV-2 variant Omicron in November 2021, the dominant
BA. 1 sub-lineage was replaced by the BA. 2 sub-lineage in Denmark. We analysed the first …

SARS-CoV-2 Omicron variants BA. 1 and BA. 2 both show similarly reduced disease severity of COVID-19 compared to Delta, Germany, 2021 to 2022

C Sievers, B Zacher, A Ullrich, M Huska… - …, 2022 - eurosurveillance.org
German national surveillance data analysis shows that hospitalisation odds associated with
Omicron lineage BA. 1 or BA. 2 infections are up to 80% lower than with Delta infection …

Effectiveness of vaccination against SARS-CoV-2 Omicron variant infection, symptomatic disease, and hospitalization: A systematic review and meta-analysis

A Meggiolaro, M Sane Schepisi, S Farina… - Expert Review of …, 2022 - Taylor & Francis
Background This meta-analysis aims to assess the effectiveness of the current Sars-Cov2
vaccine regimens against Omicron infection. A secondary endpoint aims to investigate the …

Clinical severity of SARS-CoV-2 omicron variant compared with delta among hospitalized COVID-19 patients in Belgium during autumn and winter season 2021 …

N Van Goethem, PYJ Chung, M Meurisse… - Viruses, 2022 - mdpi.com
This retrospective multi-center matched cohort study assessed the risk for severe COVID-19
(combination of severity indicators), intensive care unit (ICU) admission, and in-hospital …