A new study looking at male and female immune responses to the new coronavirus may shed new light on why men are more likely to become seriously ill with Covid-19, researchers said.Since early in the pandemic it has been clear that men, particularly older men, are at a far higher risk of dying from the virus than women of a similar age, but scientists have not yet been able to pinpoint exactly why.A new study published in the journal Nature noted that globally men account for about 60 per cent…