Minor rant : People who get ill, keep coming to work, cough all over you for two weeks solid, then either get well or make themselves so ill they are bed-ridden for days. Meanwhile they are successful in transmitting their germs to you.
My approach, at the slightest sign of a sniffle, is to wrap myself up in bed until fully well. And then to take a couple of extra days, just to be on the safe side.
I blame that bloody Lemsip advert.