Hi ,I have melanoma,treated with immunotherapy every 21 days,plus a spell of radiation.I also have other health conditions. Mycancer team dont want me to have the flu jab ,as it can interfere with my treatment. I suffer chest infections often plus asthmasymptoms,so could be very ill if I get flu.But my son looked up flu with cancer on the net & it can cause nasty /serious sde effects.Has anyone had a bad reaction,if so what