Lidia Sierpinska, MD, RN. Specialist in public health and in the field of epidemiological nursing. Head nurse, Military Clinical Hospital No. 1 with Polyclinic, Independent Public Health Care Unit, Lublin, Poland (33 years). Research and didactic employee at Vincent Pol University in Lublin, nursing speciality (2 years). Adjuct at the Radom School of Higher Education, nursing speciality (17 years). National consultant for defence in the field of nursing (15 years). Many publications within the scope of issues concerning quality management of medical services, and problems of hepatitis C as a risk factor for hospital-acquired infections.