Initial comparative analysis of pulmonary involvement on HRCT between vaccinated and non-vaccinated subjects of COVID-19.

Objectives: To compare the high-resolution computed tomography (HRCT)-derived severity score in COVID-19 patients between those who had earlier received the vaccine against the SARS-CoV-2 and those who did not.

Methods: A retrospective cross-sectional analysis of HRCT of the chest was done in correlation with the vaccination status of clinically diagnosed COVID-19 patients. The variable under evaluation was the CT severity score, whereby differential analysis of the variability on this parameter between incompletely (single dose) vaccinated, completely (both doses) vaccinated, and non-vaccinated individuals was the outcome.