Abstract
This study aimed to investigate the mortality relationship between COVID-19 and ABO blood groups and comorbid diseases. The aim of this study was to determine whether ABO blood groups and comorbid diseases can be used as a prognostic factor for hospitalization. This retrospective study included patients aged ≥ 18 years presenting to the adult emergency COVID-19 outpatient clinic. COVID-19 patients were divided into four stages according to their clinical status: mild, moderate, severe, and critical. Those with the comorbid disease were classified as Group I, and those without comorbid disease were classified as Group II. Of the 384 patients included in the study, 190 (49.5%) were male and 194 (50.5%) were female, with a mean age of 47.3 ± 18.4 years. The clinical data of the patients were scanned from the hospital automation system. Although the risk of transmission was higher, especially in people with A blood type, this rate was lower in the O blood group. The clinical course of the disease was more severe and the mortality rates were higher in the AB blood group (p < 0.001). In the hospital, 35 people who were treated for COVID-19 disease died. Certain ABO blood types and comorbid diseases were important risk factors for COVID-19 and were associated with mortality. We found that some ABO blood groups and comorbid diseases are associated with COVID-19 and may be important risk factors. While the risk of transmission of COVID-19 is high in blood group A, we think that the clinical course of COVID-19 may be more severe and the death rate higher in blood group AB.
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