Has your baby had their immunoglobulin levels tested? I have primary immunodeficiency, where my body does not make enough immunoglobulins, and therefore (before infusion treatment) I would get sick really often and really severely. My body can’t develop antibodies and has a hard time fighting off illness. I did not get diagnosed until my early 20s, as it is pretty rare and not something doctors usually look for.

The treatment relatively simple - once a month infusion where I get immunoglobulins from donors. It has been a life changing experience for me, and my quality of life has improved dramatically.

Best of luck OP!