Why People With Blood Type A Susceptible to COVID-19 Risk?

Why People With Blood Type A Susceptible to COVID-19 Risk?

As per a Chinese study, conducted in Wuhan and Shenzhen, patients with the Blood Type A may be at higher risk of acquiring COVID-19. Is blood type linked to COVID-19 risk? People with Type O are less vulnerable to infectious diseases as compared to others. Experts have compared the blood group patterns of over 2,000 patients, in both Wuhan and Shenzhen, with the local healthy people.

A preliminary study found that COVID-19 patients with Blood Type A are Susceptible to COVID-19 Risk, on the other hand, people with Type O appear to be more resistant.

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Medical researchers in China found that patients with blood Type A illustrated a higher infection rate, they even showed more symptoms as well. The researchers said that the research is still in its initial stage and still lots of research work needs to be done.

The researchers urged the governments and medical facilities to mull over blood type differences when planning mitigation measures or while taking care of SARS-COV-2 ( Severe acute respiratory syndrome coronavirus 2 ) patients.

Ms. Wang Xinghuan (one of the researchers with the Centre for Evidence-Based and Translational Medicine at Zhongnan Hospital of Wuhan University) wrote that people with blood Type A may need extra protective measures and attention to abate the odds of infection.

As per a paper published on Medrxiv.org, Ms. Wang wrote that the patients infected with SARS-COV-2 need to be kept under vigilant observation and require aggressive treatment. Conversely, people with blood Type O don’t have to worry as the risk for this infectious disease is low for them. However, this does not mean they are immune to coronavirus.

Wuhan’s death toll could be astronomically higher than the Chinese government has reported, some residents say.

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In Wuhan, more than 206 patients have died from COVID-19 so far, out of which 85 patients had type A blood. This is 63% more than the 52 people with Blood Type O. The pattern was evident across varied age and gender groups. Ms. Wang wrote that the addition of blood Type ABO, in both the patients and medical personnel, will certainly help in the management of SARS-COV-2 and coronavirus infections. She also added that this will play a major role in defining the management alternatives and also evaluating the risk exposure levels of the people.

Doctors and scientists across China comprising Beijing, Wuhan, Shanghai, and Shenzhen conducted this study. They added that the study is not peer-reviewed and the authors cautioned that using the study to guide the existing clinical practice can be risky. 25 scientists were sent to China to research the coronavirus by WHO ( World Health Organization )

Ms. Gao Yingdai (was not a part of the study), a researcher with the State Key Laboratory of Experimental Haematology in Tianjin said that significant improvements could be made with a larger sample size. Though the number of 2000 cannot be considered as a small figure, it is dwarfed by the total number of SARS-COV-2 infected patients, now exceeding 180,000 worldwide.

According to Ms. Gao, the study also failed to clarify the phenomenon like molecular interaction between varied types of RBCs (red blood cells) and the virus. Ideally, there are four types of major blood groups and they are verified by the presence or absence of so-called antigens, A and B, on the surface of RBCs that can activate an immune response.

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Austrian Karl Landsteiner (Fellow of the Royal Society and a well-known biologist) was the man behind the discovery of key blood groups in 1910 – Type A, B, AB, and O. His discovery allowed for safe blood transfusions by the matching blood types in the patients.

Blood types tend to vary in a population. The blood type of around 46% of the population in The United States of America is Type O while about 42% is Type A. Wuhan has a population of around 11 million, out of which 32% is Type O while the percentage of Type A is 34% among healthy people. Speaking of COVID-19 patients, it was 38% and 25%.


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Scientists are uncertain about the evolvement of the varied blood groups, though as per one theory, it is believed that they are a genetic memory of plagues. Others argue that the number of certain blood type populations is more because of different environmental elements such as – humidity, altitude, or temperature.

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Wrap Up

As per the studies done in the past, blood type difference has been observed in other contagious diseases such as – hepatitis B,  SARS (severe acute respiratory syndrome), and Norwalk virus.

Ms. Gao, at the Tianjin lab, made a statement that a new study may prove beneficial for all the medical professionals; however, the common people should not take the statistics too seriously.

Experts recommend everyone to clean their homes, apartment frequently, studies show that coronavirus can live on surfaces for days.

Cleaning means physically removing organic matter such as germs and dirt from surfaces. Disinfection means using chemicals to kill germs on surfaces.

Cleaning is very important, because organic matter may inhibit or reduce the disinfectant’s ability to kill germs.

Clean hands protect against COVID-19 infection

She added that you don’t need to worry if you are Type A. It does not signify that you are infected 100%. On the other hand, if you are Type O, it does not mean you are completely safe, either. You have to ensure that you wash your hands thoroughly at regular intervals and follow the guidelines issued by local authorities.

Keep a check on the Symptoms of COVID-19 & track COVID-19 cases around you and everywhere in real-time with Corona Warriors. If you develop emergency warning signs for COVID-19 get medical attention immediately. Emergency warning signs include: Trouble breathing, Persistent pain or pressure in the chest, New confusion or inability to arouse, Bluish lips or face. Avoid any ignorant behavior towards the pandemic, if you have COVID 19 symptoms, make sure you see your physician right away.

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