[Comparative severity of COVID-19 cases caused by Alpha, Delta or Omicron SARS-CoV-2 variants and its association with vaccination].
Elena Varea-JiménezEsteban Aznar CanoLorena Vega-PirisElena Vanessa Martínez SánchezClara MazagatosLucía García San Miguel Rodríguez-AlarcónInmaculada CasasMaría José Sierra MorosMaria Iglesias-CaballeroSonia Vazquez-MorónAmparo LarrauriSusana MongePublished in: Enfermedades infecciosas y microbiologia clinica (2022)
Results indicate higher intrinsic severity of the Delta variant, compared with Alpha or Omicron, with smaller differences among vaccinated individuals. Nevertheless, vaccination was associated to reduced hospitalisation in all groups.