Oh I just couldn't resist this one! Don't miss the advice about the "route of infection"
ScienceDaily: Norovirus Expert: Sanitation And Science Prevent Virus's Spread: "Better detection and identification notwithstanding, Margolin says, the fast-spreading virus is greatly affected by sanitation. 'It all boils down to the fecal-oral route. People will inadvertently consume the fecal material of another individual,' he says. Lax hand-washing, among anyone from food-preparers to caregivers to hand-shakers, is a primary route for the virus to spread; studies have shown that 75 percent of men and 50 percent of women do not wash their hands after using the restroom. Margolin assigns his students to be public restroom sleuths, and their data confirms those statistics."