I have emphysema. I have had sputum samples tested and these usually respond to Doxycycline. After my last infection they repeated the test and I was found to have e-coli!!! (I thought you had to be put down with this). 2 weeks later I was tested again and I have pseudomonas. I have been prescribed Ciprofloxacin. I feel well and really do not understand any of this. I have googled it all and it would be easy to be really worried! Have any of you experienced any of this? At the moment I feel like one of those purple slimy creatures that hang around toilet bowls!!! Anyone any idea of what is going on?