Effect of Vaccination on COVID-19 Severity and Outcome: A Comparative Study in a Tertiary Care Hospital.

Introduction: Vaccination is an important aspect of preventing/decreasing the severity of any viral disease including severe acute respiratory syndrome coronavirus 2 (SARS-CoV2). This disease being very new in the experience of mankind has very little data on the effect of vaccination on the severity of this disease. We conducted this study with the primary objective to assess the severity and clinical outcome of COVID-19 infections among nonvaccinated and vaccinated individuals.