Some people don't become sick with Covid-19 - evidence of a genetic link explains why

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Sadik Demiroz

The SARS-CoV-2 virus, responsible for causing Covid-19, can cause life-threatening complications in some people, while others who get infected manage to escape with hardly any symptoms.

More than a year into the pandemic, researchers have been trying to understand why, and new evidence is filling this gap. According to Newcastle University researchers, it has everything to do with the gene HLA-DRB1*04:01.

This gene, the team has found, is three times more prevalent in people who are asymptomatic (infected but not displaying any symptoms), suggesting that people with this gene have a level of protection against severe Covid-19 illness.

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