Blood group O associated with a reduced risk of Covid infection

Score predicts severe COVID in patients       Developed by Irish and US scientists

Many studies have been published consistently with suitable hypotheses about how infectious the virus is, who is well on the way to be contaminated, how risky the virus can be for specific kinds of individuals, etc. While those answers seem to vary month to month, a pair of studies find your blood type may play a key role in how badly COVID-19 affects you. For such blood type, the risk of developing severe symptoms, including organ failure, is also reduced.

This lends credence to the fact that people with blood type A, B and AB, may be more at risk of getting infected than those with blood type O. COVID-19 disease is not Epheme.

In this study, researchers analysed data from a Danish health registry that included more than 473 000 patients who were infected with Covid-19 between 27 February 2020 and 30 July 2020.

"This finding may suggest that such patients benefit equally from ICU admission and thus the threshold for admission should be calibrated accordingly in any future COVID-19 surge", the research team wrote.

They also controlled for ethnicity, as blood group distributions differ among ethnic groups, and maintained that fewer people with blood type O tested positive for Covid-19. Of those, 38.4 percent had blood type O, while other research indicates that blood type makes up about 41.7 percent of the population.

Both new observations came out Wednesday in the journal Blood Advances. They observed that patients having Type O or B blood spend 4.5 days less on an average in the ICUs than those having Type A or AB blood.

Your blood group depends on the presence or absence of proteins called A and B antigens on the surface of RBCs, a genetic trait inherited from your parents.

Identification of risk factors for contracting and developing serious illness following infection with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is of paramount interest. People having O blood group have neither antigen.

The median length of staying in intensive care units was 13.5 days for patients with A or AB blood types, while it was only nine days for patients with O or B blood types, the study found.

There was a slight but statistically significant difference in blood group distribution between the SARS-CoV-2 individuals and the reference population.



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