Covid, how the three genes that clear all symptoms work

Why do some people, in contact with Covid, become infected and others not? A question of genes. And why do some patients have symptoms, even severe ones, and others don’t even notice? A question of genes. The confirmation, to the second statement, comes from a study on asymptomatic patients concluded by the team of the University of Naples Federico II and Ceinge researchers, who added a new piece to the complex picture of the genetic predisposition to the different clinical phenotypes of Covid.