Agreed and I apologize for the tangent reference without explanation.

The premise of "The Sleeper Agent" is not the biography of Eric Traub, but the idea of "strategic biowarfare", whereby agents are introduced to humans not to induce sudden sickness, but instead to create "immune intolerance" which confuses the natural immune system and fools the system into allowing diseases that would have previously been attacked by same, including nefarious agents that may exist naturally in the body under the thumb of the immune system, to become a threat over time.

It's a long range plan.