New Evidence of Link Between Blood Type & COVID-19 Susceptibility

Henrietta Strickland
October 16, 2020

Dr. Amesh Adalja, a senior scholar at Johns Hopkins University, told CNN that the two new studies give "more converging evidence that blood type may play a role in a person's susceptibility to Covid infection and their chance of having a severe bout of Covid-19".

In the scientific journal Blood Advances, a special edition of the American Society of Hematology, the results of two new studies were published on October 14 - from specialists from Denmark and from Canada. The study results suggest that people with blood types "A", "B", or "AB" may be more likely to be infected with COVID-19 than people with type "O". A small handful of other studies have also indicated that people with blood type O appear to be less likely than any other blood type to test positive for Covid-19 and less likely to fall seriously sick.

The trends remained unaffected after the researchers factored in ethnicity, which affects blood group distributions.

Additionally, the research found that among 95 patients who were critically ill with the virus, 84 per cent of those with blood type A or AB required mechanical ventilation.

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.

The second new study found that people with Type O blood may be at a lower risk of getting he coronavirus in the first place relative to people with other blood types.

The International Air Transport Association (IATA) said it had identified only 44 flight-related COVID-19 cases since the beginning of 2020, versus some 1.2 billion passengers who have travelled during that time.

Blood group O
People with this blood type could have a lower risk of contracting Covid-19

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

That said, it is known that blood type can influence how your immune system fights against infections in general. People with O blood have neither antigen.

Still, a link between blood type and severity of diseases is not unheard of. It also found that people with blood group AB were the most likely to test positive for COVID-19 infection, followed by blood group B and then blood group A.

However, the ministry says there is no risk to the public and global research shows people with a historical Covid-19 infection are not infectious.

They are also at lower risk of severe Covid-19 outcomes, such as organ failure, and even death. A 2005 study in Hong Kong found that most individuals infected with SARS had non-O blood types. "If one is blood group A, you don't need to start panicking".

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

This article was originally published by Business Insider.

Other reports by Click Lancashire

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