Welcome to Phoenix Rising!
Created in 2008, Phoenix Rising is the largest and oldest forum dedicated to furthering the understanding of, and finding treatments for, complex chronic illnesses such as chronic fatigue syndrome (ME/CFS), fibromyalgia, long COVID, postural orthostatic tachycardia syndrome (POTS), mast cell activation syndrome (MCAS), and allied diseases.
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They do not own the blood, but the manufacture of blood products. Its still a bad idea though, as these things become private all accountability and transparency disappear except what little is mandated under law. For companies supplying essential services this is an issue. However the same could probably be said for many companies, I do not know that this case is unique.