Hi Jennifer @megan123, When I first had Pseudomonas it was only 1+ (mildest). Next sputum was six months later and I had 3 strains at 4+ each (worst). My doctor offered me the choice–try to eradicate it or surpress it? I said eradicate. Had the PICC line with Ciftazidime and Toby. After that treatment, no pseudomonas. Four months after that had tested out for two strains of Pseudomonas (one 4+ and one 3+). Now have 4+ and no treatment recommended. I've gotten many responses to my original post. I've copied them in a document so I can read through them and also refer back later. If I do become symptomatic I'll have some things to bring up to my doctor. Thanks for posting. Take care.