Screening blood donations for the Zika virus netted only a few infections at a cost of more than $5 million for each positive test result, according to new research.
The study was the first large look at the impact of guidelines set two years ago, when the Zika epidemic was an unfolding menace in the U.S. and health officials were scrambling to prevent new infections.
The study, published Wednesday by the New England Journal of Medicine, found that the blood donation testing requirements offered little bang for the buck. It also raised questions about whether a cheaper testing method . . .
