(AP) — A  former Hays Medical Center traveling Cath lab tech accused of infecting dozens of patients with hepatitis C through needles tainted with his own blood has reached an agreement that could keep him from facing charges in Kansas.

David Kwiatkowski, whom prosecutors described as a “serial infector,”  could get a sentence of as little as 30 years instead of the nearly 100 he could have faced if convicted in a trial.

The agreement was filed Monday. It also contained new revelations that he was fired from two Michigan hospitals and resigned from two others before beginning his traveling career.

Kwiatkowski is accused of stealing painkiller syringes from an Exeter Hospital lab in New Hampshire and replacing them with blood-tainted saline.

Thirty-two patients in New Hampshire have been diagnosed with Kwiatkowski’s strain of hepatitis C. There have been seven cases in Maryland, six in Kansas