> A natural infection grows and grows and grows until the immune system finally gets going and snuffs if out, over the course of days or weeks. Or you grow pro

> A natural infection grows and grows and grows until the immune system finally gets going and snuffs if out, over the course of days or weeks. Or you grow progressively weaker, miserable, and slowly suffocate until your body gives out—all without your family at your side. (There's a reason we do not strive for even approximate mimicry of actual disease if we can help it.)