Özet:

Aim: The purpose of this study was to evaluate correlation between ABO, Rhesus (Rh) blood type and the disease severity status, pneumonia status in children with COVID-19. Material and Methods: This is a multicenter study of all children <18 years with COVID-19 infection were retrospectively examined from their electronic medical files. Patients were divided into three categories as asymptomatic, mild illness and radiogically proven pneumonia. The differences in the ABO and Rh blood group distribution between COVID-19 patients and also the control group were analyzed. Results: A total of 1026 patients, median age was 12 (1-18) years old from 5 different hospital included in the study. Asymptomatic patients 32% (n=323), mildly symptomatic 59% (n=607), and radiologically proven pneumonia were 9% (n=96) of all cases. A total of 1600 children included as the control group. There was no statistically significant difference between the control blood groups and the COVID-19 patients’ blood group distribution (p=0.062). When the laboratory characteristics were evaluated, it was determined that as the clinical severity of the patients increased; when age (p=0.012), leukocyte count (p=0.013), CRP (p=0.002), ferritin (p=0.0001) and D-dimer (p=0.049) had increased; and the lymphocyte counts had decreased (p=0.027). There were no istatistically significant difference between blood groups (ABO and Rh), just ABO status and clinical severity condition (respectively p=0.126, p=0.630). When clinical and laboratory data were evaluated according to Rh status, no statistically significant difference was found (p>0.05). Conclusions: In our study with pediatric population, no difference was detected between blood types and/or Rhesus condition and COVID-19 severity.

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