In this Thursday, June 20, 2013 photo, Theresa Gratton, infection prevention coordinator at St. Mary's Health Center, wears a device to help remind health care workers to keep their han

 

              In this Thursday, June 20, 2013 photo, Theresa Gratton, infection prevention coordinator at St. Mary
In this Thursday, June 20, 2013 photo, Theresa Gratton, infection prevention coordinator at St. Mary's Health Center, wears a device to help remind health care workers to keep their hands clean at the hospital in Richmond Heights, Mo. In the past, hospitals have mostly relied on education, threats of discipline and reports from observers to try and make sure staff keep their hands clean but St. Mary's began testing the device about a year ago and officials say they've been stunned by how well the system works.(AP Photo/Jeff Roberson)