My mom got HepC from a contaminated transfusion after some surgery in 1976. She died from it 35 years later.
Sorry. Tragic and all too common story. Prior to ~1985, it was called “nonA,nonB’hepatitis. The virus had not yet been identified and there was no serological test. The best the blood banks could do was eliminate donors from “risk” groups and those with abnormal liver tests. Still many contracted the virus such as your mom through transfusions.Today the blood supply is much safer but drug use is very common and people are still getting infected but thankfully not as many as before.