Gram MA, Emborg HD, Schelde AB, Friis NU, et al. Vaccine effectiveness against SARS-CoV-2 infection or COVID-19 hospitalization
with the Alpha, Delta, or Omicron SARS-CoV-2 variant: A nationwide Danish cohort
study. PLoS Med 2022;19:e1003992.
PMID: 36048766
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