Blood group plays key role in vulnerability to Covid-19, new research claims – Dateway

A person’s blood type could play a key role in their vulnerability to Covid-19, with type O people less likely to catch the bug while types A and AB are most at risk, recent research shows. published.

Two independent studies published on Wednesday found that the O blood type is somewhat of a safety blanket when it comes to the coronavirus. People with this blood type were less likely to catch the disease and also had a reduced risk of suffering serious complications from the disease.

However, people with types A and AB weren’t so lucky, as scientists found they were more likely to have more severe pain than people with the other two blood groups (O and B). Blood groups are defined by their number of antigens and antibody proteins. Type O is the most common in the world.

One of the studies was carried out by a team of researchers from Odense University Hospital and the University of Southern Denmark. They compared data from the Danish health registry of more than 473,000 people tested for Covid-19 to a control group of more than 2.2 million of the general population.

Analyzing the mine of data, they found that there were fewer positive results among people with blood group O than their peers in the other three blood groups, where infection rates were similar.

“We have the advantage of a powerful control group” Lead author Dr Torben Barington, of Odense University Hospital, said. “Denmark is a small, ethnically homogeneous country with a public health system and a central registry of laboratory data. Our monitoring is therefore based on the population, which gives our results a solid basis. “

The second study looked at 95 people with severe Covid-19 in Vancouver, Canada. He found that patients with blood groups A and AB were more likely to require mechanical ventilation, suggesting they had higher rates of lung damage from the virus. They were also more likely to require dialysis due to kidney failure.

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Scientists also found that people with blood groups A and AB stayed in the intensive care unit (ICU) longer on average than people with the other two blood groups. The Canadian team said this could also signal a higher level of severity of Covid-19.

Lead author Dr Mypinder Sekhon, University of British Columbia, said: “Of particular importance as we continue to navigate through the pandemic, we now have a wide range of survivors leaving the acute part of Covid-19, but we need to explore the mechanisms by which to risk stratifying those with effects to longer term. “

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