"Cash-for-blood" companies still thriving in US.
Unlike Canada's voluntary blood-collection system, the US system routinely makes use of donations from paid donors. Milan Korcok reports that this is starting to cause some concern, since infection levels tend to be higher among those who are paid for their blood.
Korcok
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D001782:Blood Donors; D001800:Blood Specimen Collection / Q000191:economics*; D035082:Federal Government; D033161:Government Regulation; D006801:Humans; D013334:Students; D014481:United States