Whatever your blood group, it would have no impact on susceptibility to contamination by the coronavirus or on the degree of severity of Covid-19.
- No more contagions, hospitalizations or resuscitations according to blood group in Covid-19
- New study sweeps away claims from previous work that predicted increased risk for group A and lower risk for group O
Are you part of people with blood group O and you think, because this information has circulated a lot, that you are better protected than others – and in particular those with blood group A – from severe forms of Covid-19? Think again ! In any case, this is what researchers who come from publish in JAMA a new study that blood type has nothing to do with the risk of contracting a severe form of Covid-19.
No difference between different blood groups
This study involved more than 100,000 patients from an American health network comprising 24 hospitals and 215 clinics. Result: no more viral positivity in patients of group O compared to those of group A, no more hospitalizations and no more admission to intensive care!
It was the controversy raised by several previous works that led researchers at a medical center in Utah to conduct this analysis. “A first report from China suggested that blood group A was associated with increased susceptibility and blood group O was associated with reduced susceptibility to SARS-CoV-2 infection. These reports have motivated widespread interest in examining ABO blood groups as potential risk factors for COVID-19. Later studies conducted in Italy and Spain reported that blood group A was associated with an increased risk of severe COVID-19 and blood group O was associated with a reduced risk,” said Dr. Jeffrey Anderson, author of the study published in JAMA.
Other explanations
According to a doctor at the Johns Hopkins Center, one of the main establishments to observe the Covid-19 epidemic, “other explanations were probably present” to explain the differences in susceptibility to the disease. And an epidemiologist from Mount Sinai Hospital in New York points out that “correlation is not the same thing as causation, showing that two things are statistically related is not the same thing as proving that one caused the other”. And to conclude that the JAMA study closes the subject, “but it should never have existed, it was enough for people to be terrified if they had one type of blood group or reassured if they had another! “.
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