Surgery technician Kristen Diane Parker, 27, a former surgical technician at Rose Hospital, has been accused of infecting three-dozen people with hepatitis C and may have exposed thousands more, when she claimed she got careless while switching used syringes with syringes filled with a painkiller at two Colorado hospitals, as a part of her plea arrangement with federal prosecutors.

She underwent a urine analysis test and started at Rose in late October 2008. But a blood test during orientation showed she had contracted hepatitis C which she ignored.

Another shocking incident a short while later caused the hospital to test her urine for fentanyl, a specific test, which she failed. But she resigned from Rose, and soon was able to find work at Audubon in April 2009.

An hour long video footage shows the tearful and remorseful Parker, now 26, recounting her life of drug addiction, which initiated when she was in her high school, with marijuana, cocaine and experimental amounts of LSD and Ecstasy.

However, the footage included Parker claiming that she never switched syringes at the hospital in Houston and another where she worked in Mount Kisco, N. Y.

Now, authorities have discerned that she didn’t expose any patients to hepatitis C while working at Christus St. John Hospital outside Houston between May 2005 and October 2006.