Suggest Remedy For Chronic Fever From Kidney Infection

Hi , my dad is 65 years old . Diagnosed with kidney failure since 2012 . He has recently been hospitalised for an acute kidney infection . Urine test depicted coliform 3+ . He was on antibiotics but then due to an allergic reaction it had been stop and prescribe another antibiotic. He is quite sick and having constant fever . Has he any chance of recovery and if not will the infection spread to other organs of his body