Transfusion transmission of HCV infection before anti-HCV testing of blood donations in England: results of the national HCV lookback program.

Discusses results of a study investigating the transmission of hepatitis C virus (HCV) among blood transfusion recipients in England before anti-HCV testing of blood donations. Patient characteristics; Percent of patients tested who were positive for HCV; Tracing efficiency of blood recipients; Factors affecting recipient infection; Evidence of liver disease among recipients; Mortality; Study limitations.