when my father stay in hospital, he got infections also.
the only thing can do is chest physio, and antibiotic cover.
the infection is very hard to be clear, because tha patient is paralyse.
about the treatment of GBS, the doctor will choose the most suitable treatment to him.
as a daughter, I thought I could not do anything at that moment, I really understand what you feel.
you have already do you best. support your other family members, they are all suffering.