How your DNA may affect whether you get COVID-19 or become gravely ill
A study of more than 45,000 people offers hints to why some people get sick after infection
![illustration of coronavirus particles in blood](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2021/07/070821_ts_covid-genetic_feat.jpg?fit=1030%2C580&ssl=1)
Tweaks in people’s DNA may be partly to blame for why the SARS-CoV-2 virus (illustrated) can more easily infect some people than others and make some people gravely ill, while others barely notice they’re sick.
Radoslav Zilinsky/Moment/Getty Images Plus