Özet:

Abstract Objective: To determine whether there is a difference in the frequency of blood groups between the general population and COVID –19 patients and whether there is a relationship between blood groups and mortality and severity of chest CT involvement at admission in COVID –19 patients. Materials and Methods: 1546 COVID –19 patients were evaluated. Clinical data including age, sex, comorbidities, complaints at the time of admission, and outcome of the patients were obtained from medical records. In order to determine the normal distribution of the blood groups in the general population, a previous study conducted on Turkish population which consisted of 3,022,883 healthy blood donors of Turkish Red Crescent was identified as a control group. Results: There was no significant difference in gender, CT results, duration of hospitalization, and mortality rates between the blood groups (p >0.05 for all). When we compared the frequency of blood groups between the population and the patients, a statistically significant difference was found in regard to the A Rh + blood group rates (p = 0.026). Also in our study, the rate of A Rh + was found to be higher in hospitalized COVID –19 patients than the population. Also, the frequency of A Rh+ blood group was higher in patients with severe chest CT involvement compared to the normal population (p = 0.007). Conclusion: No significant difference was found between the blood groups and gender, severity of CT findings, duration of hospitalization, and mortality rates. But the rate of A Rh + was detected to be significantly higher in hospitalized COVID –19 patients than the population. Also, patients who had severe chest CT findings had higher frequency of A Rh+ blood group when compared to the normal population. Keywords: ABO blood groups, Rh groups, COVID-19, Mortality, SARS-CoV-2

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