Any flu would probably trigger a flare, I'm sure this one is no different really (unless Remicade keeps me OK). It's the fever that would signal flu vs. UC flare.
49 year old female attorney, diagnosed UC/pancolitis 1985, no surgery but much suffering. Asacol/5ASA 6x400 mg maintenance for 20+ years; used prednisone & Rowasa for flares.
August 2008 sought care of naturopathic doctor. Food sensitivity test showed wheat/gluten, other intolerances; eliminated wheat/gluten from my diet. Probiotics (Ultimate Flora, 50 billion).
Bad flare in March, used prednisone. Humira denied, started Remicade 4/12 and doing great~