Comparative severity of COVID-19 cases caused by Alpha, Delta or Omicron SARS-CoV-2 variants and its association with vaccination

• DOI: 10.1016/j.eimce.2022.11.021
• Publication Date: 2023-02-01T14:32:48Z
• Authors: Elena Varea-Jiménez; Esteban Aznar Cano; Lorena Vega-Piris; Elena Vanessa Mar...; Clara Mazagatos; Lucía García San ...; Inmaculada Casas; María José Sierra...; Maria Iglesias-Ca...; Sonia Vazquez-Morón; Amparo Larrauri; Susana Monge
• Keywords: 2019-20 coronavirus outbreak; Conditional logistic regression

This study compares the severity of SARS-CoV-2 infections caused by Alpha, Delta or Omicron variants in periods co-circulation Spain, and estimates variant-specific association vaccination with severe disease.