Coronavirus risk lowered for this blood type, studies suggest

  • Coronavirus risk lowered for this blood type, studies suggest

Coronavirus risk lowered for this blood type, studies suggest

Preliminary results from an ongoing study suggest that those with a certain blood type may have some protection against the novel coronavirus.

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.

As part of the study, the team of researchers gathered Danish health registry data from more than 473,000 individuals tested for COVID-19 and compared it to data from a control group of more than 2.2 million people, as per a report by news agency IANS.

Interestingly, the researchers found that among those who tested positive for the virus, a lower percentage had type O blood, while a higher percentage had blood types A, B, or AB. One looked at 95 critically ill COVID-19 patients at hospitals in Vancouver, Canada, between February and April. This means that it's not clear how the relationship between blood type and Covid-19 works and any link may be coincidental.

Also, people with type A and AB did not require a longer duration of hospitalisation but did remain in the intensive care unit (ICU) for longer on average, compared to people with types O or B, indicating a more severe form of COVID-19.

However, blood types A and AB are at most risk and vulnerable to the infection.

Interestingly, blood groups, A and AB were also associated with complications post-hospitalization, such as myocarditis, lung injury and renal damage.

Two studies on the topic were published Wednesday in the journal Blood Advances, a publication of the American Society of Hematology.

However, in both studies, the scientists said more research was needed. For example, people with type A blood produce different antibodies to people with blood type O. It's still not known, however, whether this has any significant effect on a person's ability to battle Covid-19.

The two studies provide further evidence that blood type or blood type can play an important role in a person's susceptibility to infection and their likelihood of having a severe attack of the disease.

Past research has also suggested that people with Type O blood were less susceptible to SARS, which shares 80 percent of its genetic code with the new coronavirus. "And if you're blood group O, you're not free to go to the pubs and bars".

"I don't think this supersedes other risk factors of severity like age and comorbidities and so forth", he told CNN, adding, "if one is blood group A, you don't need to start panicking".