New Delhi | Jagran Lifestyle Desk: The novel coronavirus has been growing at an alarming rate, affecting more than 12 million and claiming over 5 lakh lives across the world. The novel coronavirus, which supposedly originated in mainland China six months ago, is caused by the severe acute respiratory syndrome coronavirus 2 (SARS‑CoV‑2). Various studies have also surfaced about the spread of the highly contagious infection. Now a new study has found that people with Type A bloog group are at most risk of contracting COVID-19.

According to a recent peer reviewed study published in New England Journal of Medicine, people with Type A blood group were associated with a 45 per cent increased risk of having contracted severe COVID-19. On the other hand, people with Type-O blood group were associated with a 35 per cent reduced risk of the disease.

The findings were based on the genetic data of over 1,600 patients hospitalised with severe cases of COVID-19 in Italy and Spain, and were further compared them with about 2,200 others who didn’t have the disease to come to a conclusion with respect to the blood group concerned.

How many more studies find Type-A Blood Group Vulnerable to COVID infection?

Other than the study published in New England Journal of Medicine, two other studies with significant sample size enable the emergence of a pattern which shows that people with A Blood Type remain at higher risk of contracting Coronavirus.

According to a Los Angeles Times report, earlier in March, in Chinese cities of Wuhan and Shenzhen, scientists found that people with Type-A Blood Group were 21 per cent more at risk of contracting COVID infection, whereas ones with Type-O blood group were at 33 per cent lower risk. The finding was based on 2,173 COVID-19 patients in three hospitals of Wuhan and Shenzhen, which were reportedly compared with 27,000 COVID negative people.

Another study in New York’s Columbia University, with comparison of reportedly 1,559 COVID patients, found that people with Type A blood were associated with a 34 per cent greater chance of testing positive. However, those with Type O blood group were found with a 20 per cent lower chance of testing positive.

Why some blood groups are at more risk than others?

Novel Coronavirus attaches with ACE-2 receptor of our cells in the respiratory tract. Authors of the New England Journal of Medicine study write that the genes associated with blood type also affect the ACE2 receptor on human cells, and their capability to modulate COVID and infections like that.

Posted By: Abhinav Gupta