Why were blood transfusions prior to 1985 more likely to be associated with Hepatitis C transmission than blood transfusions done since 1985?

Question

Quizplus · Accepted Answer

Prior to 1985, blood transfusions were not screened for Hepatitis C virus (HCV), as it was unknown at that time. Consequently, many people contracted HCV through blood transfusions. Since 1985, donor blood has been tested for either nonA, nonB Hepatitis virus or specifically for Hepatitis C virus, significantly reducing the risk of transmission through blood transfusions. Option A is incorrect because the incidence of Hepatitis C infection overall has actually increased since the 1980s. Option B is incorrect because HIV is a different virus than HCV. Option C is incorrect because processing and storage does not completely destroy HCV in blood products.

Why Were Blood Transfusions Prior to 1985 More Likely to Be