Blood Groups Decide Case Severity

Ever wondered why some who test positive for coronavirus need a ventilator and experience more severe symptoms than others who are cured after showing very mild to moderate symptoms? The answer, researchers suggest, may be in the study of human genetics.

- Milan Sharma

A report published by Bloomberg, The 23andMe study, looked at susceptibility rather than severity of illness and included 10,000 participants who had Covid-19. The research found that individuals with type O blood are between 9% and 18% less likely than individuals with other blood types to have tested positive for Covid-19.