For most of the first year sputum tests showed that I had Haemophilus Influenzae repeatedly. I took Azithromycin and Amoxi-CLV together. After 9 months, those tests started coming back negative. My pulmonologist concluded I wasn't having bacterial infections anymore, however I still reacted positively to antibiotics, though I'd eventually get sick again. That was a major clue that the tests weren't picking up the resistant bacteria embedded deep in my lungs.

I was on long term low dose Azithromycin as a prophylactic for about 4 months in the middle of the two years of illness. At the end of that period it stopped having any effect. So I got my lung's right upper lobe removed.

After another 9 months I took Levoflaxacin which gets deep into the tissues and that solved it!

P.S. I had perfect lung health for 2 months, but after 2 years of severe illness, I got the opportunity to take IVIG as a preventative measure and I've been doing that for 2 months now.