I know, let's introduce, by tiny doses, EVERY known virus and bacteria known to manking. The we will be immume to any disease!!!!
Let's take the Hantavirus, then a bit of Ecoli from Germany, maybe add that with some little known MidEast/FarWesternAsia viruses, and some stuff from the jungles of Borneo while we're at it.
Maybe we can be Superman after taking all that crap. Or maybe we'll just be in our deathbeds sick as a crapper, one half step from 6' under.