Grannis SJ, Rowley EA, Ong TC, Stenehjem E, et al. Interim Estimates of COVID-19 Vaccine Effectiveness Against COVID-19-Associated Emergency Department or Urgent Care Clinic Encounters and Hospitalizations Among Adults During SARS-CoV-2 B.1.617.2 (Delta) Variant Predominance - Nine States, June-August MMWR Morb Mortal Wkly Rep 2021;70:1291-1293.
PMID: 34529642