Aslaner, HümeyraGökçek, Mebrure BeyzaBenli, Ali RamazanBaydemir, RecepAkyol, GülsahGüven, Zeynep TugbaKaynar, Leylagül2024-09-292024-09-292021https://doi.org/10.37990/medr.896945https://search.trdizin.gov.tr/tr/yayin/detay/1125095https://hdl.handle.net/20.500.14619/11163Aim: This study aimed to investigate the effect of blood groups on the risk and prognosis of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in the infected/source cases and contact individuals. Material and Method: This study was designed as a descriptive and retrospective study. The individuals who were in contact with the SARS-CoV-2main/source cases and followed at home were included in the study.The distribution of the participants according to their blood groups was assessed. Patients were divided into three groups as group 1 including source/main cases, group 2 including SARSCoV-2contacts who were living in the same house with the source case and followed up, and group 3 including contacts who were followed up in the same house but did not develop SARS-CoV-2 during the follow-up. Results: While the rate of Non-O blood group was the highest (n=365, 39.4%) in group 2the rate of O blood group was the highest (n=190, 42.8%) in group 3 (p:0.028). While the rate of Rh positive blood group was high in group 1 that of Rh negative blood group was higher in group 3 (p:0.000). For other variables, the presence of a chronic disease was more in group 1 (p:0.000). Rh (+) blood group (OR:0.464, p:0.010, %95 Cl: 0.306 ~ 0.703) was among the factors affecting the development of the infection. Conclusion: Patients infected with SARS-CoV-2 mostly had A, Non-O blood group and Rh positivity. Having Rh (+) blood group may have increased the rate of infection development in high-risk household contacts. After patients in this blood group were detected as contacts a closer follow-up may be necessary to decrease morbidity.eninfo:eu-repo/semantics/openAccessArticle10.37990/medr.896945196319111250953