 Further, to reduce costs, health workers would reuse tubing and other equipment that would be contaminated with a person's blood or plasma after donation.After confirming the presence of hepatitis C in several of the collections, she reported this to local health officials to change their practices, but they asserted it would cost too much to address the problem.She approached the national Ministry of Health with her findings, which led to a 1993 regulation to require all plasma donors to be screened for hepatitis C. She was removed from her position at the collection center, but took it upon herself to evaluate other facilities elsewhere, creating her own testing site and taking her own samples from the population, as well as evaluating collection centers and identifying further points of cross-contamination.