How many people on here have sinus infections and post nasal drip also? could MAC also be in our nose tubes? will the antibiotics fix that also? It could be reinfecting us. I really hope they come up with something new soon. It sounds like many of us are resistant due to the films that form around the bugs and they are looking at ways to break them down at the moment which could be great. But we also need new antibiotics as the old ones do not work for all of us.