Comparison of Severity of Lung Involvement between Vaccinated and Unvaccinated COVID-19 Patients Assessed using HRCT Scan of Thorax: A Cross-sectional Study

Introduction: The Coronavirus Disease-2019 (COVID-19) pandemic, as we all know has wreaked havoc in many countries due to its high rate of infectivity. A High-Resolution Computed Tomography (HRCT) thorax scan is a must determine the extent lung involvement, which helpful further management. Aim: To compare severity involvement COVID- 19 patients with double dose, single dose vaccinated and unvaccinated patients, thus assess role vaccination limiting infected patients. Materials Methods: This was cross-sectional study conducted on 244 Department Radiology Adichunchungiri Institute Medical Sciences, Bellur, Karnataka, India. were divided into three groups based their status. Group constituted who had received two doses vaccine, group B only one C Severity Index (CTSI) score each patient assessed. CTSI these compared vaccine preventing or disease. chi-square test, Analysis Variance (ANOVA) test t-test used means independent groups. Results: HRCT scans total (166 males 78 females) included study, analysed (n=30) mild score. (n=34) both moderate (n=180) mild, severe scores. There no B. mean scores A, 0.8, 7.2 9.3 respectively (p-value <0.001). less comparison C. Conclusion: Complete essential disease COVID-19 infection, limit complications long-term sequelae.