@Sunil
You bring up a great point. It wasn't until I had the flu that I knew what the flu really was. Most the time people just have something similar to food poisoning and think it's the flu. The real flu will knock you out for a week and you'll only remember it being three days with all the sleep.
Different severity in different years it was throws people off too. This year up in the NW it's an early and hard hitting strain, while two years ago late and not too bad.
