NewslettersImmunology of Infectious Disease News Vaccine Effectiveness against SARS-CoV-2 Reinfection during Periods of Alpha, Delta, or Omicron Dominance: A Danish Nationwide Study By lbeveridge - November 23, 2022 0 Using Danish nationwide registries, the authors obtained information on SARS-CoV-2 infections, COVID-19 vaccination, age, sex, comorbidity, staying at hospital, and country of origin. [PLoS Medicine] Full Article