Had the flu in early 2012 (had my flu jab though in late 2011). Usually fairly healthy despite having multiple conditions - COPD, asthma, Type 2 Diabetes. Started feeling very rough on waking Saturday morning and self-diagnosed that I needed help after being unable to put my socks on (good diagnostic tool that!). Went to local GP centre. Nurse did my obs and immediately transfered me to A & E, then to MAU. Bit of a blur after that because apparently I experienced several respiritory arrests - ending up aspirating my stomach contents. Woke up in ICU some weeks later. I'd been in a coma on life support after multiple system failure (heart, lungs, kidneys). Had to retire from work early after I recovered, having spent a year off work. Miracle I didn't die to be honest. Became severely depressed subsequent to this occurence...
All better now though, alway have the flu jab and always encourage other to do so as well. If I come across someone that talks sh*t about how bad vaccines are I stay as far from them as possible.