The search for people who never get Covid
nature.com
nature.com
Yeah I don't see how you'll be able to find someone whose not just immune to covid, but immune from genetics. Because someone could've e.g. gotten a small dose, been asymptomatic, and then started producing antibodies. Or maybe they're just very healthy and not genetically susceptible to covid (because really healthy people can still get really sick). Or maybe the process which produces antibodies got lucky and activated / produced the right ones early in infection.
And now that vaccines are out, you have to find someone whose also unvaccinated.
It’s still hard to differentiate someone who’s naturally immune from someone who has one or several asymptomatic infections, you’re right.