血液筛检对预防通过输血和器官移植感染是至关重要的。
Blood screening is vital to prevent infection through transfusion and organ transplantation.
在就筛检可通过输血传播的感染提供数据的148个国家中，有41个(28%)未能对捐献的血液筛检一项或多项标志物。
Of 148 countries (28%) that provided data on screening for transfusion-transmissible infections, 41 were not able to screen the donated blood for one or more of the markers.
有关专家认为，如果血液检测在大量研究中证实有效并获联邦通过，初步血液检测筛查可减少这些结肠镜检的需要。
A preliminary blood screening could reduce some of the demand, experts said - if the test proves valid in larger studies and receives federal approval.
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