Your blood type may determine how sick you get from COVID

Grant Boone
October 18, 2020

Among the COVID-19 positive, they found fewer people with blood type O and more people with A, B, and AB types.

These were the details of the news Two studies reveal blood type is likely to be associated with. for this day.

The second research is based on almost 95 people from Vancouver, Canada who had tested positive for the virus.

People with certain blood types may have a reduced risk of contracting coronavirus and even with the infection, be less susceptible to experiencing severe symptoms, new studies have shown.

The scientists collected data from the Danish health registry data of over 473,000 people who had tested positive for the novel coronavirus.

Researchers also found the blood type A or AB group had longer stays in the intensive care unit, a median of 13.5 days, compared to the other group with blood type O or B who had a median of 9 days.

Lead author of the study, Dr Mypinder Sekhon, of 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".

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The first of the two studies saw scientists look at health registry data from more than 473,000 people in Denmark who tested for Covid-19 and compared it to a control group of more than 2.2 million people from the general population, accounting for nearly 40 percent of the total Danish population.

As per the observations made according to these data, they concluded that people who had blood type O were less vulnerable whereas people with A and AB were more at risk.

The researchers examined data from 95 critically ill COVID-19 patients hospitalised in Vancouver.

They wrote that patients with blood groups A or AB were more likely to require mechanical ventilation (34, or 84%) versus those with blood group O or B (35, or 61%), which means that their risk of lung injury from Covid-19 was greater.

However, both studies' authors note several limitations that warrant consideration, and suggest further research to confirm these findings and enhance scientists' understanding of blood type association to Covid-19 severity.

It was also found that more patients with groups A and AB needed dialysis for kidney failure. Yet another earlier study by a US-based biotechnology company, 23andMe, said that people with O-type blood group are less likely to catch the COVID-19 infection.

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