I believe your situation might benefit from a qualified second opinion. Can the Enterobacter cloacae be controlled with an Antibiotic with reduced potential for serious side effects? Who is the recognised authority on human bacteriology in your area? I would check around at area medical universities. It possible that a consultation with a physcian or Phd. with an in depth knowledge of this subject might will be worth your time and money. From your post, it does not sound like the E. cloacae is life threatening. You have the luxury of time, why not use it to your adantage? It is somewhat depressing, but it is painfully obvious that the "practice of modern medicine" is largely a series of quasi-educated best guesses.