CONCORD, N.H. (AP) — Exeter Hospital has filed another lawsuit in hopes of getting others to pay for settlements it reached after a traveling medical technician infected patients with hepatitis C.

David Kwiatkowski is serving 39 years in prison for stealing painkillers and replacing them with saline-filled syringes tainted with his blood. Despite being fired repeatedly over drug allegations, he had worked as a cardiac technologist in Kansas and six other states before being hired in New Hampshire in 2011.

He worked at the Hays Medical Center catheterization lab  between May and September, 2010.

Since then, Exeter Hospital has settled dozens of lawsuits with infected patients and nearly 200 people who were not infected but claimed some harm from the outbreak. It sued a medical staffing agency and an accreditation organization two years ago, and earlier this month, filed a new lawsuit against a company that connects hospitals to staffing agencies.