>I'm allergic to e. coli, strep, and another bacteria -- all of which normally
>inhabit the human body in the sinuses, gut, etc.

I haven't heard much about allergies to bacteria, themselves;
although many people are allergic to their by- products (eg
penicillin, tetnus, botulism).

many people also have found they have trouble balancing the biotics
in their gut- yeast versus bacteria. A place to start learning about
the balance is at http://www.panix.com/~candida/