New studies show that people with blood group O may be at lower risk for COVID-19

Who has Blood type O May be less vulnerable COVID-19 (new coronavirus infection) (# If there is no character limit, add parentheses when it first appears Two studies published yesterday show that you are less likely to get seriously ill.
The· the study It provides further evidence that blood types can play a role in a person’s susceptibility to infections and their potential for severe seizures. disease..

The reason for this link is unclear, and further research is needed to say how it affects patients, if any.

Blood types from the UK’s National Blood Service, including various blood types A, B, AB, O. (SSPL via Getty Images)

Research adds to growing evidence

Danish research Of the 7422 people who tested positive for COVID-19, only 38.4% had blood type O, but in the group of 2.2 million people who did not test, that blood type was 41.7 of the population. Occupied%.

In contrast, 44.4% of Group A are positive, while in Denmark’s wider population, blood type accounts for 42.4%.

In another study, Canadian researchers had a higher proportion of patients with type A or AB than those with blood group O or B among 95 patients with severe COVID-19 (84%). , I found that there were 61 people. percent.

The· Canadian In the study, patients with blood group A or AB had a longer median stay in the intensive care unit with a median of 13.5 days compared to patients with blood group O or B with a median of 9 days. I understand.
Test tubes for blood samples found in the lab center. (SOPA image via Gett / LightRocket)
“As a clinician … it’s deep in my heart to look at and stratify patients, but the definitive markers need to be repeatedly discovered in many jurisdictions that show the same thing.” Dr. Mypinder Sekhon is an intensivist Vancouver General Hospital Said the author of a Canadian study.

“If you have blood type A, don’t panic. If you have blood type O, you can’t go to pubs or bars freely.”

Unless you have to do a blood transfusion, there is little difference in the daily lives of most people.

Dr. Toben Barrington, lead author of the Danish paper and clinical professor at Odense University Hospital and the University of Southern Denmark, said that one should not be overly concerned about the association between blood type and COVID-19.

“I don’t know if this is some kind of protection for Group O or some kind of vulnerability in other blood types,” Dr. Barrington said.

Dr. Toben Barrington said that one should not be overly concerned about the relationship between blood type and COVID-19. (SOPA image via Gett / LightRocket)

“I think this is of scientific interest. Knowing what the mechanism is, it could be used positively in some way for treatment.”

In a Danish study, researchers analyzed data on Danish individuals tested between February 27 and July 30, from people who had not been tested for blood group distribution among them. Compared with the data.

They found that blood type was not a risk factor for COVID-19 hospitalization or death.

There are several theories, but researchers do not yet know which mechanism can explain the link between different blood types and COVID-19.

Dr. Sekon said that people with blood type O can explain that they have fewer major coagulation factors and are less likely to have coagulation problems in their blood. coagulation It is a major driver of the severity of COVID-19.
The dose of enoxaparin, an anticoagulant used to treat blood clots associated with COVID-19. (Hurst newspaper via Getty Images)

Other possible explanations include blood group antigens and how they affect the production of antibodies that fight infection. Alternatively, it may be related to genes related to blood type and their effects on receptors in the immune system.

“This is an interesting repetitive scientific observation and we really need more mechanical research,” he said.

“Important Research Question”

The results of two new studies provide more converged evidence that blood types may play a role in human susceptibility. COVID infection Dr. Ameshua Darja, a senior scholar at the Johns Hopkins University Health and Security Center in Baltimore, who was not involved in either study, said.
Another study, published in the New England Journal of Medicine in June, found some genetic data. COVID-19 (new coronavirus infection) (# If there is no character limit, add parentheses when it first appears Patients and healthy people suggest that people with type A blood are at higher risk of getting infected and those with type O blood are at lower risk.

Previous genetic studies, combined with two new studies from Blood Advances, “suggest that this is the real phenomenon we see,” with a focus on emerging infectious diseases. Said Dr. Adalja.

“It hasn’t become an ironclad warship, but it’s clearly suggestive, and nothing contradicts it.

“The same pattern is appearing, and the O type tends to stand out.”

Most humans fall into one of four blood types: A, B, AB, or O. (Image tie-up by Getty Images)

Dr. Adalja said blood types and their susceptibility to various infections were previously studied in the medical literature. For example, studies show that people with blood type O are more susceptible to norovirus infections.

Is New coronavirus This causes COVID-19. “We need to understand the mechanism and at the molecular level to be able to reliably determine how this is happening. It’s actually O-type, like tracking O-type. It’s not a thing. Blood type. “

“We are now beginning to fully understand, so I think the answer is an important research question.

“There is more science to be done here, but it seems to me that there is more evidence accumulated about this hypothesis.”

Place of originNew studies show that people with blood group O may be at lower risk for COVID-19

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