I am OCD about hand washing - I mean, I have always been this way. I am the person that offers a bottle of germ-X to people I'm in the car with..Just in case. I still got it. I wash my hands in the bathroom constantly and then use germ-X. Still got it 2x. They say it is horrible this year. You can get it from someone who has prepared your food (which is how I suspect I got it) - or touching infected surfaces and not washing hands..