I actually can't remember the last time I was sick... It's been a couple years, probably. It's not that I'm lucky, though - I'm just such a huge recluse that I'm never around people I could catch something from lol.
My sister, on the other hand seems to have a cold every time I speak to her! I don't know how she manages to get sick so often.
My immune system is awful due to an on-going health issue that doctors have been trying and failing to treat for years. At this time of year I just tend to be unwell constantly.
I got a little sick a few weeks ago. Thankfully it only lasted the overall span of a day to a day and a half. It was a far cry from sinus infections I used to get years ago, but was still annoying.