I have severe immune deficiency from cancer treatment (CLL) with Bronchiectasis. I had a lung infection for 6 months until I was diagnosed (Mayo Clinic) with immune deficiency. I do weekly infusions of Hyzentra at home and that has helped. However, I am currently three antibiotic courses (Augmentin and then Doxycycline) trying to deal with sinus and lung infection. But I'm sure the SCIG helps significantly! Life goes on!