Why do some people never get Covid?

"The unpredictability of the coronavirus has made clear just how much we don't know... I wondered why young men without identifiable risk factors had become critically ill while their spouses and children were able to manage their symptoms at home. More recently, Omicron has swept through cities, infecting people at a far greater rate than before, and yet some continued to test negative — even if a roommate was positive.

Now physicians and researchers throughout the globe are asking, and attempting to answer, similar questions."

https://bt.sg/34Gh