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The second new study found that people with Type O blood may be at a lower risk of getting the coronavirus in the first place relative to people with other blood types.
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People with Type O blood had 'reduced susceptibility' to infection "Patients in these two blood groups may have an increased risk of organ dysfunction or failure due to COVID-19 than people with blood types O or B," the study authors concluded.Ī June study found a similar link: Patients in Italy and Spain with Type O blood had a 50 percent reduced risk of severe coronavirus infection (meaning they needed intubation or supplemental oxygen) compared to patients with other blood types. Patients with Type A or AB, meanwhile, were also more likely to need dialysis, a procedure that helps the kidneys filter toxins from the blood. They did, however, find that only 61 percent of the patients with Type O or B blood required a ventilator, compared to 84 percent of patients with Type A or AB. The researchers did not see any link between blood type and the length of each patient's total hospital stay, however. The latter group stayed, on average, 13.5 days in the ICU.
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They found that patients with Type O or B blood spent, on average, 4.5 fewer days in the intensive-care unit than those with Type A or AB blood. One looked at 95 critically ill COVID-19 patients at hospitals in Vancouver, Canada, between February and April. Patients with Type O or B blood had less severe COVID-19īoth new studies came out Wednesday in the journal Blood Advances. These new findings echo similar findings about Type O blood seen in previous research, creating a clearer picture of one particular coronavirus risk factor.
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They were also less likely to require ventilation and less likely to experience kidney failure. A small fraction of blood proteins screened, known as adhesion molecules, moderate interactions between immune cells and blood vessels – it can become a therapeutic target to prevent sick patients deteriorating in hospital.One of the new studies specifically found that COVID-19 patients with Type O or B blood spent less time in an intensive-care unit than their counterparts with Type A or AB. The findings have also highlighted novel pathways which could be used as treatment or form preventative therapies for COVID-19. The research findings should not alarm those with type A blood.] Type known to play a role in COVID-19 severity, including age and pre-existing [There are a few risk factors beyond blood Research has found that proportion of people who are group A is higher inĬOVID-19 positive individuals, this suggests that blood group A is more likely Not link precise blood group with risk of severe COVID-19 but since previous Of an individual and our study has linked it with both risk of hospitalisationĪnd the need of respiratory support or death,” said Dr. “The enzyme helps determine the blood group Validate prior observational studies linking type A blood with an increased Propensity to different blood protein levels, allowing an assessment of causalĭirection from high blood protein levels to COVID-19 severity whilst avoiding “In our study the groups are defined by their genetic Randomly assigned at conception similar to how a randomised-controlled trial(s)Īssign people to groups,” explained Dr. “Causality between exposure and disease canīe established because genetic variants inherited from parent to offspring are Levels of blood proteins and COVID-19 disease outcomes, where severity wasĭetermined by either hospitalisation and respiratory support or death. Randomisation would assess the relationship between the gene variants that determine Proteins through the Mendelian randomisation analysis method. The researchers screened over 3,000 blood It was found that those with type A blood wereĪt much higher risk of hospitalisation and death compared to those with type Oīlood, due to the type of blood proteins they produce. Researchers have identified several causal links between blood type and risk of