A little amateur question. There was an article in zman a while ago about some guy who developed immunity to snake bites. He used to inject into himself a little venom, and his body would fight it and develop a cure for others who got bitten (they would inject some of his blood).
No idea how these things work - if it's any comparison or not, but wouldn't it make sense for those who have the antibodies for covid19, to keep on exposing themselves so their immune system keeps on fighting the virus?