Inpatient Outcomes in a SARS-CoV-2 Naïve Population Achieving High Vaccination Coverage Preceding Planned Virus Entry: A Prospective, Natural Experiment, Pandemic Response Cohort Study.
On November 23, 2021, South Australia lifted border restrictions allowing passive entry of COVID-19 cases into the community. On this date the adult South Australian population was highly vaccinated and COVID-19 naïve (prior infection rate <1:1000). There are no previous outcome data following introduction of SARS-CoV-...