What happened in the U.K.'s infected blood scandal from the 1970s to '90s?

The final report of the U.K.'s infected blood inquiry was published on Monday, nearly six years after it began looking into how tens of thousands of people contracted HIV or hepatitis from transfusions of tainted blood and blood products in the 1970s and 1980s.

What happened in the U.K.'s infected blood scandal from the 1970s to '90s?
The final report of the U.K.'s infected blood inquiry was published on Monday, nearly six years after it began looking into how tens of thousands of people contracted HIV or hepatitis from transfusions of tainted blood and blood products in the 1970s and 1980s.