Have you been introduced to Donna Gates "Body Ecology Diet and rebuilding you Immunity. She talks about her tribulations with exhaustive Antibiotics and how they can actually not only destroy harmful bacteria but also the inner ecosystem, the good flora. The immunity is after all in the gut and helps you bring your ecology back into balance. It is very well researched and a great resource, it has become my best friend. She deserves a metal of valour. All Best.