Those with blood types A, B, and AB appear to be at similar levels of infection risk.ĭr Torben Barington, of the University of Southern Denmark, and colleagues looked for a potential association as part of the urgent need to identify coronavirus risk factors.ĭr Barington says: “We have the advantage of a strong control group - Denmark is a small, ethnically homogenous country with a public health system and a central registry for lab data - so our control is population-based, giving our findings a strong foundation.”īarnkob MB, Pottegård A, Støvring H, Haunstrup TM, Homburg K, Larsen R, Hansen MB, Titlestad K, Aagaard B, Møller BK, Barington T (2020) “Reduced prevalence of SARS-CoV-2 infection in ABO blood group O”, Blood Adv, doi: 10.1182/bloodadvances.2020002657 In a separate study on more than 473,000 people tested for COVID-19 in Denmark, researchers also found that people with blood type O appear to be at the lowest risk of infection. ![]() “Of particular importance as we continue to traverse the pandemic, we now have a wide range of survivors who are exiting the acute part of COVID-19, but we need to explore mechanisms by which to risk stratify those with longer-term effects.” We observed this lung and kidney damage, and in future studies, we will want to tease out the effect of blood group and COVID-19 on other vital organs. Researcher Dr Mypinder Sekhon, from the University of British Columbia, said: “The unique part of our study is our focus on the severity effect of blood type on COVID-19. Although these patients did not have longer overall hospital stays than those with blood types O or B, they needed more time in intensive care. Patients in these two blood groups may have an increased risk of organ dysfunction or failure due to COVID-19. ![]() Analysis showed that those with blood groups A and AB were more likely to require mechanical ventilation for breathing difficulties, and dialysis for kidney failure. ![]() Two new studies, published in the journal Blood Advances, have explored how blood groups are associated with risk of infection and severity of disease from SARS-CoV-2 infection.Ī Canadian study gathered information from 95 critically ill COVID-19 patients at hospitals in Vancouver.
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