20. Blood banks will shortly start to screen all donors for NANB hepatitis. Although the new screening tests are estimated to disqualify up to 5 percent of all prospective blood donors, they will still miss two-thirds of donors carrying NANB hepatitis. Therefore, about 10 percent of actual donors will still supply NANB-contaminated blood. Which of the following inferences about the consequences of instituting the new tests is best supported by the passage above?
发表于 2022-4-4 15:15:24