There's no way to make money from people naturally being immune, so regulators have no reason to incentivize that behavior. And tribally, it's not as much of a

There's no way to make money from people naturally being immune, so regulators have no reason to incentivize that behavior. And tribally, it's not as much of a bonding experience as sticking a painful sharp object into your shoulder and injecting yourself with the tribe's serum.