The survey was done by the Bradley Corporation of Menomonee Falls, a manufacturer of bathroom and locker room furnishings.
It found 54 percent of the respondents said they "wash their hands no more or less frequently" in public restrooms as a result of the virus. It also found that 87 percent of respondents wash their hands after using public bathrooms, but one percent of those only rinsed with water.
The survey was conducted online July 28-31 and involved 1,020 American adults across the country aged 18 to 65.
The U.S. Centers for Disease Control and Prevention says hand washing is critical in preventing illness.