Researchers of this study found that Covid-19 patients with blood groups A and AB had an increased risk of severe clinical outcomes, compared to patients with blood groups O or B. Meanwhile, people with blood group O or B, experienced a visit in the ICU with a median of about nine days. There again, it was observed that of all blood group types, blood type O (positive or negative) was the most "protected" ones of all.
"The Dublin-Boston score is easily calculated and can be applied to all hospitalised Covid-19 patients", said RCSI Professor of Medicine Gerry McElvaney, the study's senior author and a consultant in Beaumont Hospital. The findings also reveal patients across different ethnic groups continue to show fewer infections if they have O blood. Patients with type A or AB blood were more likely to require mechanical ventilation, suggesting that they had greater rates of lung injury from COVID-19. Researchers in Denmark find fewer coronavirus patients have O blood compared to those with A, B, and AB blood.
Although these new studies provide evidence of a potential link between blood type and vulnerability to the deadly virus, additional research is needed to better understand why and what it means for patients, as per reports.
More patients with type A and AB blood required dialysis for kidney failure, the study added.
Both new studies came out Wednesday in the diary Blood Advances. Another study in April (pre-print and awaiting peer-review) found that among 1,559 coronavirus patients in New York City, a lower proportion than would be expected had Type O blood.
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They also found that while people with blood types A and AB didn't have longer overall hospital stays than those with types O or B, on average, they were in intensive care longer, which may indicate more severe COVID-19.
And in March, an investigation of more than 2,100 coronavirus patients in the Chinese urban areas of Wuhan and Shenzhen likewise found that individuals with Type O blood had a lower danger of disease.
Health officials have estimated that 60,000 people could be suffering with long-term after effects of COVID-19. "If one is blood group A, you don't need to start panicking".
Regardless of this developing group of proof, be that as it may, Mypinder Sekhon, a co-creator of the Vancouver study, said the link is as yet questionable. Although blood group frequencies and susceptibility for SARS-CoV-2 can vary substantially among ethnic groups, Denmark is a relatively ethnically homogenous society with free access to health care services.