SARS-CoV-2: We finally know why some people got COVID while others didn’t https://www.nature.com/articles/s41586-024-07575-x A specific gene called HLA-DQA2, which was expressed at a much higher level in the volunteers who did not go on to develop a sustained infection https://theconversation.com/we-finally-know-why-some-people-got-covid-while-others-didnt-233063