I didn't vote because none of the options fit us. My kids have been sick, but not at any of the frequencies in the poll.
Since restarting daycare when I returned to work in September, they haven't been sick yet (knock on wood!
For the 10 months ODD was in daycare from when I returned to work after mat leave with her until I went off on mat leave with YDD, I think she was sick about 3 times, so once every 4 months ish?
The year I was on mat leave they didn't get sick at all!