Asymptomatic Covid-19 is due to a specific gene variation some lucky people have

Scientists have discovered a possible link as to why some people don't get any Covid-19 symptoms despite testing positive. — Filepic

Even during the confusion of early 2020, when the coronavirus was indeed novel and images of lines of coffins being unloaded from Italian hospitals spread fear throughout Europe and beyond, it was apparent that some people who caught the virus either ended up with mild symptoms or none at all.

It was always difficult to get a clear overall picture of how pervasive asymptomatic Covid-19 was.