Coronavirus: People with this blood group least vulnerable to COVID-19

Grant Boone
October 16, 2020

Most of the 36 hospitalised cases are stable or improving, while none is in critical condition in the intensive care unit. Around 42 percent of the Danish population has blood type O and another 42 percent have blood type A. Despite equal representation, fewer people with blood type O caught Covid-19; just 38 percent of the people who tested positive were blood type O, while 44 percent were blood type A. Similarly, people with blood type B and AB also received more positive Covid-19 results than expected.

In the second study, the researchers examined 95 critically ill Covid-19 patients in a hospital in Vancouver.

New research suggests that people with O blood type are less likely to contract the novel coronavirus.

The findings of two separate studies aimed to reason why the virus is lethal for some, while others are not even aware they have had it.

Types A and AB were also more likely to need a type of dialysis that helps the kidneys filter blood without too much pressure on the heart.

However, blood types A and AB are at most risk and vulnerable to the infection. A study published in July found that people with Type O were less likely to test positive for COVID-19 than those with other blood types.

Still, a link between blood type and severity of diseases is not unheard of. They found the portion of patients who needed mechanical ventilation was higher in those with blood type A or AB when compared with a group of patients with blood type O or B.

That said, it is known that blood type can influence how your immune system fights against infections in general.

Your Blood Type May Predict Your Risk For Severe COVID-19
The former group also remained in the intensive care unit for a median of 13.5 days, while the latter's median stay was nine days. It's still not known, however, whether this has any significant effect on a person's ability to battle Covid-19.

The researchers also noted that people with blood types A and AB did not have longer overall hospital stays.

While it's still not clear whether this link is a direct cause-and-effect relationship or simply a coincidental correlation, the two new bits of research further builds on the idea that blood type might have some role in how Covid-19 affects people.

Past research has also suggested that people with Type O blood were less susceptible to SARS, which shares 80 percent of its genetic code with the new coronavirus.

"The study suggests if you have type O, you have a slightly lower risk", Dr. Roy Silverstein, chair of medicine at the Medical College of Wisconsin, said.

"But at the present time, there is no reason to think that if you have type O blood, you're protected from COVID-19".

"If one is blood group A, you don't need to start panicking".

This article was originally published by Business Insider.

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