A new study found only about one-third of people don't use soap andonly five percent washed their hands long enough to properly kill germsafter using the bathroom.

Researchers at Michigan State University said past studies suggestedthere was a much higher rate of proper hand washing, with more than 90 percentof adults saying they always wash their hands, but that rate isapparently actually inflated.

The studyresearchers observed more than 3,700 people in public restrooms andfound that people only spend an average of about six seconds washingtheir hands.

The Center for Disease Control and Prevention saysit takes 15 to 20 seconds of vigorous hand washing with soap and waterto effectively kill germs, and that insufficient hand washingcontributes to nearly half of all food-borne illness outbreaks.

The study found 95 percent of people they observed did not wash their hands long enough to kill germs.

The study foundmen were especially bad about proper hand washing. Fifteen percent ofmen didn't wash their hands at all (compared to seven percent of women);and only half of the men who did wash up used soap.